Factoring Question

Question

The question is 125x^3-8. 

Answer 1

Hi Melanie,

 

125x^3- 8

 

=(5x-2)(25x^2+10x+4)........using a^3+b^3=(a+b)(a^2-ab+b^2)

 

 

 

 

Meena

Answer 2

This is in the form a³ - b³, where a is 5x and b is 2. The factoring formula is a³ - b³ = (a - b)*(a² + ab + b²).

125x³ +27 = (5x)³ - 2³ = (5x - 2)(25x² + 10x + 4)