factorise a(a+b)^3-3ab(a+b)
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this is your ans
Step-by-step explanation:
a {a^3+b^3+3a^2b (a+b)}-3ab (a+b)
a {a^3+b^3+3a^2b+3ab^2-3a^2b-3ab^2}
a (a^3+b^3)
a (a+b)(a^2-ab+b^2)
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sorry............................
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