Question

simplify : (x+y)(x +y+z)-(x-y)(x-y-z)​

Answer 1

Answer:

2x ( 2y + z )

Step-by-step explanation:

(x+y)(x +y+z)-(x-y)(x-y-z)​

= $x^{2}$ + xy + xz + yx + $y^{2}$ + yz - $x^{2}$+  xy + xz + yx - $y^{2}$ - yz

= 2xy + 2xz + 2yx

= 4xy + 2xz

= 2x ( 2y + z )