29. Simplify (3m + 2n)3-(3m - 2n)3
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Answered by
1
Step-by-step explanation:
3{3m+2n-3m+2n}
3{4n}
=12n
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Answered by
4
Answer refer to Attachment
use this identity
a³- b³ = (a-b)(a²+ab+b²)
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