How do i factor this completely?

asked Jan 6, 2019 24.2k views

4 votes

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4 votes

b^3z + 27z
=z(b^3 + 3^3)
=z(b+3)(b^2 -3b + 9)

because
a^3 + b^3 = (a+b)(a^2 − ab + b^2)

answer
z(b+3)(b^2 -3b + 9)

Sbkl answered Jan 12, 2019

by Sbkl

7.9k points

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