Question

a square minus 2ab plus b square minus c square is ?​

Answer 1

Answer:

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Answer 2

Explanation:

Since $a^{2} - 2ab + b^{2} = a^{2} -b^{2}$,

therefore, $a^{2} - 2ab + b^{2} - c^{2} = a^{2} - b^{2} - c^{2}$.

$a^{2} - b^{2} - c^{2} = (a-b-c) (a-b+c)$

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