Question

Regroup the terms and factorise: z – 19 + 19xy – xyz 5.

Answer 1

z-19+19xy-xyz

= -19+19xy-xyz+z

= -19(1-xy)+z(1-xy)

= (1-xy)(z-19)

Answer 2

Answer:

Step-by-step explanation:

(z-xyz) (-19+19xy)

z(1-xy)-19(1-xy)

(1-xy) (z-19)