Question

simplify a^2+(3a-b)(3a+b+b^2)
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Answer 1

Step-by-step explanation:

distributive property

$a {}^{2} + 9a {}^{2} + 3ab + 3ab {}^{2} - 3ab - b {}^{2} - b {}^{3}$

3ab and -3ab cancels out

$a {}^{2} + 9a {}^{2} + 3ab {}^{2} - b {}^{2} - b {}^{3}$

this is the answere