SOLUTION: Solve. (x+7)squared = 13 x squared - 4x = 12

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Question 122758: Solve.

(x+7)squared = 13
x squared - 4x = 12
Answer by checkley71(8403) About Me  (Show Source):
You can put this solution on YOUR website!
(X+7)^2=13
X^2+14X+49-13=0
X^2+14X+36=0
x+=+%28-b+%2B-+sqrt%28+b%5E2-4%2Aa%2Ac+%29%29%2F%282%2Aa%29+
X=(-14+-SQRT[14^2-4*1*36])/2*1
X=(-14+-SQRT[196-144])/2
X=(-14+-SQRT52])/2
X=(-14+-7.2)/2
X=(-14+7.2)/2
X=-6.8/2
X=-3.4 ANSWER.
X=(-14-7.2)/2
X=-21.2/2
X=-10.6 ANSWER.
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X^2-4X-12=0
(X-6)(X+2)=0
X-6=0
X=6 ANSWER.
X+2=0
X=-2 ANSWER.