kiaraflawrez
kiaraflawrez
31-01-2018
Mathematics
contestada
How do i factor this completely?
Respuesta :
choixongdong
choixongdong
31-01-2018
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)
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