Question

by using suitable identity simplify
$(xy - yz) {}^{2}$
​

Answer 1

$(xy - yz) ^{2}$

$(xy) ^{2} + (yz) ^{2} - 2(xy)(yz)$

$x ^{2} y ^{2} + y ^{2} z ^{2} - 2xy ^{2} z$