Question

x в квадрате +xy+z(x+y)

Answer 1

x² + xy + z(x + y) = x² + xy + xz + yz

х² + ху + z(x + y) = x(x + y) + z(x + y) =
(x + z)(x + y)

Answer 2

$x^2+xy+z(x+y) = (x^2 + xy) + z(x+y)$$= x(x+y)+z(x+y)=(x+z)+(x+y)$