Question

simply/ evaluate
(√2x-3y)²​

Answer 1

$( \sqrt{2} x - 3y {)}^{2} \\ =( \sqrt{2} x {)}^{2} + (3y {)}^{2} - 2( \sqrt{2} x)(3y) \\ = 2 {x}^{2} + 9 {y}^{2} - 6 \sqrt{2} xy$

Formula used:

(a+b)²=a²+b²+2ab