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(m+n)3-(m-n) 3
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Answer:
(3m+3n)-(3m-3n)
3m-3m+3n+3n
6n
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Step-by-step explanation:
(m-n)2=9
Step-by-step explanation:
1. (m+n)3-(m-n) 3
2. (m+n )(m-n) =3+3
3. (m-n)2 =9