Question

125 x cube -343 y cube

Answer 1

Answer:

125 x^3 - y^3

=(5x)^3 - (y^3

use identity :

a^3 - b^3 = (a - b) (a^2 + ab + b^2)

=( 5 x - y){ (5 x )^2 + ( 5x ) ( y) + (y)^2}

=(5x-y) (25 x^2 + 5 x y + y^2)