Question

find the square of (4a-5b)​

Answer 1

$\large\bold\orange{\underline{Answer:-}}$

$\implies$ Using the identity : (a - b)² = a² - 2ab + b²

$\implies$ (4a - 5b) = (4a)² (-2) × 4a × (-5b) + (-5b)²

$\implies$ (4a - 5b) = 16a² + 40ab + 25b²

Hence, (4a - 5b)² = 16a² + 40ab + 25b²

Answer 2

Answer:

(4a - 5b) = 16a² + 40ab + 25b²