The question is 125x^3-8. Jun 6 | Melanie from Bronx, NY | 2 Answers | 0 Votes Mark favorite Subscribe Comment
Hi Melanie, 125x^3- 8 =(5x-2)(25x^2+10x+4)........using a^3+b^3=(a+b)(a^2-ab+b^2) Meena Jun 6 | Meena S. Comment
This is in the form a^{3} - b^{3}, where a is 5x and b is 2. The factoring formula is a^{3} - b^{3} = (a - b)*(a^{2} + ab + b^{2}). 125x^{3} +27 = (5x)^{3} - 2^{3} = (5x - 2)(25x^{2} + 10x + 4) Jun 6 | Alex S. Comment