SOLUTION: 15^=x^+(x+3)^2

Algebra ->  Expressions-with-variables -> SOLUTION: 15^=x^+(x+3)^2      Log On


   

Question 322781: 15^=x^+(x+3)^2
Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
I assume you mean like this,
15%5E2=x%5E2%2B%28x%2B3%29%5E2
225=x%5E2%2Bx%5E2%2B6x%2B9
2x%5E2%2B6x-216=0
x%5E2%2B3x-108=0
%28x%2B12%29%28x-9%29=0
Two solutions:
x%2B12=0
highlight%28x=-12%29
.
.
.
x-9=0
highlight%28x=9%29