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

This Question is Closed

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

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

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

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

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

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

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

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

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

hartnn
 one year ago
Best ResponseYou've already chosen the best response.249 is right side, and is the square of 7 what about left side ? x^210x+25 is squaree of ?

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

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

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

hartnn
 one year ago
Best 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!

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

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

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

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

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

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

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

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

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

hartnn
 one year ago
Best 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!

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

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

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

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

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

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

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

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

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

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

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

terenzreignz
 one year ago
Best ResponseYou've already chosen the best response.0Notice 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 :)

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

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

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

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