Expand
-7x^{2}+56x-108
Evaluate
-7\left(x-4\right)^{2}+4
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-7\left(x^{2}-8x+16\right)+4
Use binomial theorem \left(a-b\right)^{2}=a^{2}-2ab+b^{2} to expand \left(x-4\right)^{2}.
-7x^{2}+56x-112+4
Use the distributive property to multiply -7 by x^{2}-8x+16.
-7x^{2}+56x-108
Add -112 and 4 to get -108.
-7\left(x^{2}-8x+16\right)+4
Use binomial theorem \left(a-b\right)^{2}=a^{2}-2ab+b^{2} to expand \left(x-4\right)^{2}.
-7x^{2}+56x-112+4
Use the distributive property to multiply -7 by x^{2}-8x+16.
-7x^{2}+56x-108
Add -112 and 4 to get -108.
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