(a+b) cube-(a-b)cube
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Answered by
2
Answer:
what do you mean question
l don't understand
Answered by
0
Answer:
2b3+6a2b
Step-by-step explanation:
(a+b)^3=a3+b3+3a2b+3ab2
(a-b)^3=a3-b3-3a2b+3ab2
subtract both
you get 2b3+6a2b
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