Expansion for (3a+b^3) is
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Answer:
Did you mean (3a+b)^3?
Assuming it is, the answer is: 27a^3 + 27a^2b + 9ab^2 + b^3
Step-by-step explanation:
(3a+b)^3
=(3a+b)(3a+b)(3a+b)
= (9a^2+6ab+b^2)(3a+b)
= 27a^3+9a^2b+18a^2b+6ab^2+3ab^2+b^3
= 27a^3 + 27a^2b + 9ab^2 + b^3
Done! :)
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