Expand
a^{2}-2ab+8a+b^{2}-8b+16
Evaluate
\left(a-b+4\right)^{2}
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a^{2}-2ab+8a+b^{2}-8b+16
Square a-b+4.
a^{2}-2ab+8a+b^{2}-8b+16
Square a-b+4.
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