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jazzyfa30
Group Title
Solve the equation by using the Square Root Property.
x^2 = 10x + 24
 one year ago
 one year ago
jazzyfa30 Group Title
Solve the equation by using the Square Root Property. x^2 = 10x + 24
 one year ago
 one year ago

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hartnn Group TitleBest ResponseYou've already chosen the best response.2
ok, so \(x^210x=24\) the coefficient of 'x' here is 10 divide it by 2 and square the result, what u get ?
 one year ago

hartnn Group TitleBest ResponseYou've already chosen the best response.2
***the coefficient of 'x' here is 10
 one year ago

jazzyfa30 Group TitleBest ResponseYou've already chosen the best response.1
so it would be x^25x=24
 one year ago

hartnn Group TitleBest ResponseYou've already chosen the best response.2
no no.. the coefficient of x is 10, right ? divide it by 2, you get 5, but then square it, \(\large (5)^2=...?\)
 one year ago

jazzyfa30 Group TitleBest ResponseYou've already chosen the best response.1
is that right????
 one year ago

hartnn Group TitleBest ResponseYou've already chosen the best response.2
umm...noo...how u got thta ?
 one year ago

jazzyfa30 Group TitleBest ResponseYou've already chosen the best response.1
i squared 5 isnt that what i was supposed to do
 one year ago

jazzyfa30 Group TitleBest ResponseYou've already chosen the best response.1
oh i thought i was supposed to square root it not square my b now what
 one year ago

hartnn Group TitleBest ResponseYou've already chosen the best response.2
ohh...u took square root...we are supposed to square..
 one year ago

hartnn Group TitleBest ResponseYou've already chosen the best response.2
ok, we add 25 on both sides \(x^210x+25=24+25\) notice that left side is a perfect square! of ?
 one year ago

hartnn Group TitleBest ResponseYou've already chosen the best response.2
49 is right side, and is the square of 7 what about left side ? x^210x+25 is squaree of ?
 one year ago

hartnn Group TitleBest ResponseYou've already chosen the best response.2
\((x5)^2 =... ?\) can u find ?
 one year ago

hartnn Group TitleBest ResponseYou've already chosen the best response.2
nopes, \((a+b)^2=a^2+2ab+b^2\) so, \((x5)^2 =x^210x+25\) so here we have \((x5)^2=7^2\) take square root on both sides!
 one year ago

jazzyfa30 Group TitleBest ResponseYou've already chosen the best response.1
then what
 one year ago

jazzyfa30 Group TitleBest ResponseYou've already chosen the best response.1
im confused
 one year ago

hartnn Group TitleBest ResponseYou've already chosen the best response.2
did u take square root on both sides ? what u got ?
 one year ago

hartnn Group TitleBest ResponseYou've already chosen the best response.2
\((x5)^2=7^2 \implies x5 = \pm 7 \\ x5 =7 \quad \quad x5=7\) get 2 values of 'x' from here!
 one year ago

jazzyfa30 Group TitleBest ResponseYou've already chosen the best response.1
but 7 isnt apart of any of my answer choices
 one year ago

hartnn Group TitleBest ResponseYou've already chosen the best response.2
u need to solve x5 =7 x5 = 7
 one year ago

jazzyfa30 Group TitleBest ResponseYou've already chosen the best response.1
x= 12 x=2
 one year ago

jazzyfa30 Group TitleBest ResponseYou've already chosen the best response.1
ok Solve the equation by completing the square: x2  8x + 15 = 0
 one year ago

hartnn Group TitleBest ResponseYou've already chosen the best response.2
same thing, here, the coefficient of x is 8 divide it by 2, what u get ?
 one year ago

hartnn Group TitleBest ResponseYou've already chosen the best response.2
yes, then square it...what u get ?
 one year ago

hartnn Group TitleBest ResponseYou've already chosen the best response.2
4 *4 will be +16
 one year ago

hartnn Group TitleBest ResponseYou've already chosen the best response.2
so, adding 16 on both sides... \(x^28x+16=15+16\)
 one year ago

jazzyfa30 Group TitleBest ResponseYou've already chosen the best response.1
right side:1 left side: idk
 one year ago

jazzyfa30 Group TitleBest ResponseYou've already chosen the best response.1
i think its x^24x2x=1
 one year ago

jazzyfa30 Group TitleBest ResponseYou've already chosen the best response.1
is that right??????
 one year ago

jazzyfa30 Group TitleBest ResponseYou've already chosen the best response.1
@GoldPhenoix please help
 one year ago

hartnn Group TitleBest ResponseYou've already chosen the best response.2
\(x^28x+16 = (x4)^2\) so, we have \((x4)^2=1\) just take square root on both sides!
 one year ago

jazzyfa30 Group TitleBest ResponseYou've already chosen the best response.1
?????????
 one year ago

hartnn Group TitleBest ResponseYou've already chosen the best response.2
when you take square root, the square part goes away! (x+4) =+1 or x4 =1 find 2 values of x from here...
 one year ago

jazzyfa30 Group TitleBest ResponseYou've already chosen the best response.1
(x3)(x+3) i think
 one year ago

jazzyfa30 Group TitleBest ResponseYou've already chosen the best response.1
a. x = + 5 b. x =3 or x = 5 c. x =3 or x = 5 d. x =3 or x =5
 one year ago

hartnn Group TitleBest ResponseYou've already chosen the best response.2
x4 = 1 , x = 1+4 = 3 is correct but for 2nd part, you get x4 =1 x= 1+4 = 5
 one year ago

jazzyfa30 Group TitleBest ResponseYou've already chosen the best response.1
Solve the equation by completing the square: x^2 + 2x = 120
 one year ago

terenzreignz Group TitleBest ResponseYou've already chosen the best response.0
Do you know how to complete the square? :)
 one year ago

terenzreignz Group TitleBest ResponseYou've already chosen the best response.0
I see. Here's an example:\[\Large x^2 + \color{red}6x =40 \]
 one year ago

terenzreignz Group TitleBest ResponseYou've already chosen the best response.0
What you do is take that coefficient (number beside) the x with NO EXPONENT. In our case, 6.
 one year ago

terenzreignz Group TitleBest ResponseYou've already chosen the best response.0
Take half of it, 3, and then square it, getting 9.
 one year ago

terenzreignz Group TitleBest ResponseYou've already chosen the best response.0
Now, add that to BOTH SIDES of the equation. \[\Large x^2 +\color{red}6x\color{blue}{+9}=40\color{blue}{+9}\]
 one year ago

terenzreignz Group TitleBest ResponseYou've already chosen the best response.0
Simplify. \[\Large x^2+\color{red}6x+9=49\]
 one year ago

terenzreignz Group TitleBest ResponseYou've already chosen the best response.0
You'll notice that the left side is now what you call a 'perfect square trinomial' It may be expressed as... \[\Large (x+\color{red}3)^2=49\]
 one year ago

terenzreignz Group TitleBest ResponseYou've already chosen the best response.0
Notice of course, that 3 is half of the original coefficient of x, which was 6. Now take the square root of both sides: \[\Large \sqrt{(x+3)^2}=\sqrt{49}\] Notice that the square root and the square (exponent 2) cancel out. But the square root of 49 may be either positive or negative 7. \[\Large x+3=\pm7\] Bring the 3 to the other side, you now get \[\Large x = 3\pm7\] which means either x = 3 + 7 = 4 or x = 3  7 = 10 Case Closed :)
 one year ago

terenzreignz Group TitleBest ResponseYou've already chosen the best response.0
So... go ahead now, get started with your own problem, using the same concepts. I'll walk you through it if you like :)
 one year ago

jazzyfa30 Group TitleBest ResponseYou've already chosen the best response.1
yes please
 one year ago

terenzreignz Group TitleBest ResponseYou've already chosen the best response.0
By your lead :)
 one year ago

jazzyfa30 Group TitleBest ResponseYou've already chosen the best response.1
u on skype or call me at 8039376271 cus by u typing it it is confusing m please
 one year ago

terenzreignz Group TitleBest ResponseYou've already chosen the best response.0
I don't have skype. come on, we can do this... I'll get you started... \[\Large x^2 +\color{red}2x = 120\]
 one year ago

jazzyfa30 Group TitleBest ResponseYou've already chosen the best response.1
then call me i dont understand
 one year ago

jazzyfa30 Group TitleBest ResponseYou've already chosen the best response.1
@jessika96
 one year ago
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