Question

multiply ( a+ 4b) (a^2 - 2a + b)

pls answerrr step by step ​

Answer 1

Step-by-step explanation:

=(a+4b)(a^2-2a+b)

=(a.a^2-2a.a+b.a+4b.a^2-2a.4b+4b.b)

=(a^3-2a^2+ab+4ba^2-8ab+4b^2)

=(a^3+2a^2(4b-1)-7ab+4b^2)

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