Evaluate
\left(a-b+7\right)^{2}
Expand
a^{2}-2ab+14a+b^{2}-14b+49
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a^{2}-2ab+14a+b^{2}-14b+49
Square a-b+7.
a^{2}-2ab+14a+b^{2}-14b+49
Square a-b+7.
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