substract m2 - n2 from n2 - m2
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2n2 - 2m2 is the answer.
Explanation:
(n2 - m2) - (m2-n2)
=n2 - m2 - m2+n2
=2n2 - 2m2 (Answer)
Explanation:
(n2 - m2) - (m2-n2)
=n2 - m2 - m2+n2
=2n2 - 2m2 (Answer)
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