Question

$l^{2} - (m - n) ^{2}$
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Answer 1

Answer:

l²–(m–n)²=l²–(m²–2mn+n²)

=l²–m²–n²+2mn

(l+m-n)(l-m+n)=l²–(m–n)²

Answer 2

Answer:

${l}^{2} - ( {m}^{2} + {n}^{2} - 2mn)$

${l}^{2} - {m}^{2} - {n}^{2} + 2mn$

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