Question

x^3+75xy^2+15x^2y+125y^3

Answer 1

x^3 + 75xy^2 + 15x^2y + (5y)^3
(x + y)^3 = x^3 + y^3 + 3x^2y + 3xy^2
x^3 + (5y)^3 + 3×(x)^2 × 5y + 3×x×(5y)^2
(x+5y)^3

Answer 2

x³+75xy²+15x²y+125y³
= x³ + 3.x.(5y)²+ 3.x².5y +(5y)³
= (x+5y)³
= (x+5y)(x+5y)(x+5y)