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anonymous
 one year ago
Solve 5x2 = 30x  65.
anonymous
 one year ago
Solve 5x2 = 30x  65.

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myininaya
 one year ago
Best ResponseYou've already chosen the best response.0\[5x^2=30x65 \\ 5x^2+30x+65=0\] you could divide both sides by 5 and see if you end up with something factorable on the the left hand side or you can just use quadratic formula

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0i tried that and i wound up with \[\frac{ 6\pm \sqrt{16} }{ 2}\]

myininaya
 one year ago
Best ResponseYou've already chosen the best response.0\[\text{ dividing both sides by 5} \\ x^2+6x+13=0\]

myininaya
 one year ago
Best ResponseYou've already chosen the best response.0\[x=\frac{6 \pm \sqrt{6^24(1)(13)}}{2(1)} \\ =\frac{6 \pm \sqrt{3652}}{2}=\frac{6 \pm \sqrt{16}}{2} =\frac{6 \pm \sqrt{1(16)}}{2} \\ =\frac{6 \pm \sqrt{1} \sqrt{16}}{2}\] you are right so far

myininaya
 one year ago
Best ResponseYou've already chosen the best response.0just need to find sqrt(16) and just recall how we rename sqrt(1)

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0how did you get 1 in radical and 16 ?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0a. x = 3 ± 2i b.x = 3 ± 4i c.x = 6 ± 2i d.x = 6 ± 4i These are the answers that I got and I'm so confused

myininaya
 one year ago
Best ResponseYou've already chosen the best response.0\[=\frac{6 \pm i (4)}{2} \\ =\frac{6}{2} \pm i \frac{4}{2}\] can you simplify? Are you asking where I got sqrt(16) didn't you also get that for that one part? That is what your expression said.

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0oh so A i got it ! lol

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0can you help me with this one as well ? Solve 3x2 + 30x  90 = 0.

myininaya
 one year ago
Best ResponseYou've already chosen the best response.0try dividing both sides by 3 and use quadratic formula again

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0lol hold on a baby stole my pen and paper lol

myininaya
 one year ago
Best ResponseYou've already chosen the best response.0see how far you can get with the problem and if you can't get all the way through it post what you can get through

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0k im stuck on almost the last part im at \[\frac{ 10\pm \sqrt{220} }{ 2 }\]

myininaya
 one year ago
Best ResponseYou've already chosen the best response.0let me check what you have so far one sec

myininaya
 one year ago
Best ResponseYou've already chosen the best response.0\[3x^2+30x90=0 \\ \text{ divide both sides by 3 just \to make things easier \to play with } \\ x^210x+30=0 \\ x=\frac{(10) \pm \sqrt{(10)^24(1)(30)}}{2(1)}\]

myininaya
 one year ago
Best ResponseYou've already chosen the best response.0so (10)=10 and 100120=20

myininaya
 one year ago
Best ResponseYou've already chosen the best response.0\[x=\frac{10 \pm \sqrt{20}}{2}\]

myininaya
 one year ago
Best ResponseYou've already chosen the best response.0now sqrt(20)=sqrt(1)*sqrt(20) but there is a perfect square factor in 20 sqrt(20)=sqrt(1)*sqrt(4)*sqrt(5)

myininaya
 one year ago
Best ResponseYou've already chosen the best response.0\[x=\frac{10 \pm \sqrt{1} \sqrt{4} \sqrt{5}}{2}\] see if you can simplify from there

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0is it this?x equals 10 plus or minus 2i square root of 5

myininaya
 one year ago
Best ResponseYou've already chosen the best response.0\[x=\frac{ 10 \pm i (2)\sqrt{5}}{2}\] you didn't say anything about the 2 on bottom

myininaya
 one year ago
Best ResponseYou've already chosen the best response.0anyways you can separate the fraction and simplify a bit more

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0with the 10 and the 2?

myininaya
 one year ago
Best ResponseYou've already chosen the best response.0(A+B)/C=A/C+B/C so from previous we have: \[x=\frac{10}{2} \pm i \frac{2}{2}\sqrt{5}\]

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0x equals 5 plus or minus i square root of 5?

myininaya
 one year ago
Best ResponseYou've already chosen the best response.0yes since 10/2=5 and 2/2=1

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0can you help me with the rest xDDD lol

myininaya
 one year ago
Best ResponseYou've already chosen the best response.0i think i can help with one more but I want to see you work it all the way to the end and I will check it and we can make changes if needed

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Solve 5x2 = 30x  65.

myininaya
 one year ago
Best ResponseYou've already chosen the best response.0that is the same as the first equation you put

myininaya
 one year ago
Best ResponseYou've already chosen the best response.0but we can do it again if you didn't understand it

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0oh lol i put the wrong one cx

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Solve x2 + 4x + 8 = 0.

myininaya
 one year ago
Best ResponseYou've already chosen the best response.0since we already did this one I will be a bit more detailed with the explanation: \[5x^2=30x65 \\ \text{ I first added } 30x \text{ and } 65 \text{ on both sides } \\ 5x^2+30x+65=0 \\ \text{ I then notice all terms are divisible by 5} \\ \text{ So I divided both sides by 5} \\ x^2+6x+13=0 \\ \text{ comparing this to } ax^2+bx+c=0 \\ \text{ I identified } a=1, b=6,c=13 \\ \text{ so using the quadratic formula we have } \\ x=\frac{b \pm \sqrt{b^24ac}}{2a}=\frac{(6)\pm \sqrt{(6)^24(1)(13)}}{2(1)} \\ x=\frac{6 \pm \sqrt{3652}}{2} \\ x=\frac{6 \pm \sqrt{16}}{2} \\ \text{ now } \sqrt{16}=\sqrt{1(16)}=\sqrt{1} \sqrt{16}=i (4)=4i \\ \text{ so we have } \\ x=\frac{6 \pm 4i}{2} \\ \text{ now seperating the fraction } \\ x=\frac{6}{2}\pm\frac{4i}{2} \\ x=\frac{6}{2}\pm\frac{4}{2}i \\ x=3 \pm 2i\] now I see you have another equation there see if you can follow what I did here to solve your equation

myininaya
 one year ago
Best ResponseYou've already chosen the best response.0you can skip to comparing your equation to ax^2+bx+c=0

myininaya
 one year ago
Best ResponseYou've already chosen the best response.0which I think your problem isn't identifying a,b, and c

myininaya
 one year ago
Best ResponseYou've already chosen the best response.0your problem is playing with the square root and separating the fraction

myininaya
 one year ago
Best ResponseYou've already chosen the best response.0\[x^2+4x+8=0 \\ \text{ is the same as } 1x^2+4x+8=0 \\ \\ a=1,b=4,c=8 \\ x=\frac{b \pm \sqrt{b^24ac}}{2a}=\frac{(4) \pm \sqrt{4^24(1)(8)}}{2(1)} \\\] what do you get when you simplify this monster (and he isn't a bad looking monster; just a few teeth)

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0\[\frac{ 4\pm \sqrt{1632} }{ 2 }\] so \[\frac{ 4\pm \sqrt{16} }{ 2 }\] but im stuck now :/

myininaya
 one year ago
Best ResponseYou've already chosen the best response.0I actually simplify sqrt(16) for you above

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0would i divide the 16 by 4?

myininaya
 one year ago
Best ResponseYou've already chosen the best response.0sqrt(16)=4 sqrt(1)=i you have sqrt(16) though sqrt(16) remember 16 is same as 1*16 so sqrt(16)=sqrt(1*16) =sqrt(1)*sqrt(16) you should be able to identify sqrt(1) as i and you should be able to simplify sqrt(16) since you know 4^2=16 (Where 4>0) then sqrt(16)=?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0so would it be x equals negative 4 plus or minus 2 I

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0cause it was all over two

myininaya
 one year ago
Best ResponseYou've already chosen the best response.0\[x^2+4x+8=0 \\ \text{ is the same as } 1x^2+4x+8=0 \\ \\ a=1,b=4,c=8 \\ x=\frac{b \pm \sqrt{b^24ac}}{2a}=\frac{(4) \pm \sqrt{4^24(1)(8)}}{2(1)} \\ \\ x=\frac{4 \pm \sqrt{1632}}{2} =\frac{4 \pm \sqrt{16}}{2} \\ x=\frac{4 \pm 4i }{2} \\ \text{ now separate the fraction and simplify a bit more }\]

myininaya
 one year ago
Best ResponseYou've already chosen the best response.0since 4/2=2 and 4/2=2 so yep \[x=\frac{4}{2} \pm \frac{4}{2}i =2 \pm 2i\]

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0i think i got the rest <3 thank you . now i gotta fill out some more job apps :/ ugh growing up sucks wish there was such thing as never land

myininaya
 one year ago
Best ResponseYou've already chosen the best response.0with peterpan remember those kids never get pizza

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0that is true but i would find a way to create it xD
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