SOLUTION: Here's my question: Solve: {{{(x+4)^2=18}}} Here's what i did: {{{(x+4)(x+4)=18}}} {{{x^2+8x+16=18}}} {{{x^2+8x-2=0}}} I can't factor th

Algebra ->  Equations -> SOLUTION: Here's my question: Solve: {{{(x+4)^2=18}}} Here's what i did: {{{(x+4)(x+4)=18}}} {{{x^2+8x+16=18}}} {{{x^2+8x-2=0}}} I can't factor th      Log On


   

Question 92682: Here's my question: Solve: %28x%2B4%29%5E2=18
Here's what i did: %28x%2B4%29%28x%2B4%29=18
x%5E2%2B8x%2B16=18
x%5E2%2B8x-2=0
I can't factor that so i'm stuck what do i do?
Answer by Nate(3500) About Me  (Show Source):
You can put this solution on YOUR website!
Quadratic Formula ... or:
%28x+%2B+4%29%5E2+=+18
x+%2B+4+=+0+%2B-+sqrt%2818%29
x+=+-4+%2B-+sqrt%2818%29
x+=+-4+%2B-+sqrt%282%2A3%2A3%29
x+=+-4+%2B-+3%2Asqrt%282%29