Question

regroup the terms and factorise
z-19+19xy-xyz

Answer 1

Step-by-step explanation:

z - 19 + 19xy - xyz

= -19 + 19xy + z - xyz

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

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

= (1 - xy)(z - 19)

Answer 2

Answer:(z-19)(1-xy)

Step-by-step explanation:

19xy-19+z-xyz

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

(z-19)(1-xy)