Question

Z - 7 - 7 x y + x y z factorize by regrouping method

Answer 1

z - 7 - 7xy + xyz

= xyz + z - 7xy - 7

= z ( xy + 1) - 7 (xy +1)

= (xy + 1)(z - 7)

Answer 2

z-7-7xy+xyz
z+xyz-7-7xy
z(1+xy)-7(1+xy)
(1+xy)(z-7)