Question

125x³-27y³
solve it please​

Answer 1

Answer:

$125x^3-27y^3$

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

   Using the formula, $x^3-y^3=\left(x-y\right)\left(x^2+xy+y^2\right)$

$\left(5x\right)^3-\left(3y\right)^3=\left(5x-3y\right)\left(5^2x^2+5\cdot \:3xy+3^2y^2\right)$

                     $=\left(5x-3y\right)\left(25x^2+15xy+9y^2\right)$