Question

Z - 7 - 7 xy + xyz factorise by using grouping method

Answer 1

Factorization,

we have,

z - 7 - 7xy + xyz

= (z - 7) - xy(7 - z)

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

= (z - 7)(1 + xy)

That's it
Hope it helped (－－〆)