Question

Z=-x^2y^2 + 4xy -x^2 + 4x

Answer 1

Answer:

$z = {x}^{2} {y}^{2} + 4xy - {x}^{2} + 4x \\ z = {y}^{2} + 4xy + 4x \\ z = {y}^{2} + 8xy$

Its factorisation method friend. May it helps u.