Question

pls answer this question

jisne correct answer diya I mark him brilliant​

Answer 1

Answer:

$x \times x - 2y \times 2y + 2x \times 2x - y \times y \\ = {x}^{2} - 4 {y}^{2} + 2 {x}^{2} - {y}^{2} \\ = 2 {x}^{2} - {x}^{2} - 4 {y}^{2} - {y}^{2} \\ = {x}^{2} - 5 {y}^{2}$

done.....