Question

$4(x - y) + 8({y - x}) ^{2}$
Please answer this question by explaining step by step.
Thank You​

Answer 1

Answer:

$4(x - y) + 8 {(y - x)}^{2} = \\ 4x - 4y + 8( {y}^{2} + {x}^{2} - 2xy) = \\ 4x - 4y + 8 {y}^{2} + 8 {x}^{2} - 16xy .$