SOLUTION: -4(x+2)squared=-20

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Question 95816: -4(x+2)squared=-20
Answer by checkley71(8403) About Me  (Show Source):
You can put this solution on YOUR website!
-4(X+2)^2=-20
-4(X^2+4X+4)=-20
4X^2+16X-16+20=0
4X^2+16X+4=0
4(X^2+4+1)=0
USING THE QUADRATIC EQUATION WE GET:x+=+%28-b+%2B-+sqrt%28+b%5E2-4%2Aa%2Ac+%29%29%2F%282%2Aa%29+
X=(-4+-SQRT[4^2-4*1*1])/2*1
X=(-4+-SQRT[16-4])/2
X=(-4+-SQRT12/2
X=(-4+-3.464)/2
X=(-4+3.464)/2
X=-.5359/2
X=-.268 ANSWER.
X=(-4-3.464)/2
X=-7.464/2
X=-3.732 ANSWER.