Question

Factorise1+64x^3 please answer this question

Answer 1

Given: 1 + 64x^3

= 1^3 + (4x)^3

= (1 + 4x)(1^2 - 4x + (4x)^2)

= (1 + 4x)(1 - 4x + 16x^2)

Hope this helps!

Answer 2

Answer:

64x^3=-1

x^3=-1/64

x=cube root-1/64

x=-1/4