Question

solve for x: \[\sqrt{xsquared+8x}= 4\sqrt{3}\]

A. -12
B. -4
C. 4
D. -12, 4

Answer 1

\[\sqrt{x^2+8x}=4\sqrt3\]
Square both sides:
\[\left(\sqrt{x^2+8x}\right)^2=\left(4\sqrt3\right)^2\\
x^2+8x=48\\
x^2+8x-48=0\]
Hint: left side can be easily factored.

Answer 2

so what would be the answer?

Answer 3

@SithsAndGiggles so you dont like ending it ?

Answer 4

Jessica can you factorizing ?

Answer 5

@jhonyy9, I believe the second principle should answer your question. http://openstudy.com/code-of-conduct