Question

PLEASE HELP WILL MAKE BRAINLIEST!!! Factor using the identity:

a3 + b3 = (a + b)(a2 – ab + b2)

8z3 + 27

A.(2z + 3)(z2 – 6z + 9)

B.(2z + 3)3

C.(8z3 + 27)(8z2 – 16z3 + 729)

D.(2z + 3)(4z2 – 6z + 9)

Answer 1

Answer:

(2 z + 3) (4 z^2 - 6 z + 9)

Step-by-step explanation:

8z3 + 27  

a = 2z

b = 3

a^2 = (2z)^2 = 2z^2    

ab = (2z)*3 =6z

b^2 = 3^2 =9

a3 + b3 = (a + b)(a2 – ab + b2)

8z^2 +27 = (2z+3) (4z^2 -6z +9)

Answer 2

Answer:

(2 z + 3) (4 z^2 - 6 z + 9)