Question

(2x-5y)^3 using suitable identity

Answer 1

$\huge\color{aqua}\implies\huge \bold \red{ Answer}$

$(2x - 5y) {}^{3} \\ on \: using \: identity \\ (x - y) {}^{3} =x {}^{3} - y {}^{3} - 3 x y(x - y) \\ = 2x {}^{3} - 5y {}^{3} - 3 \times 2x \times 5y(2x - 5y) \\ = 2x {}^{3} - 5y {}^{3} - 30xy(2x - 5y) \\ = 2x {}^{3} - {5y}^{3} - 60x {}^{2} y + 150xy {}^{2}$