Question

(xyz+2) (xyz-2)
Plsss solve the following

Answer 1

Step-by-step explanation:

xyz²-2xyz+2xyz-4

xyz²-4

Answer 2

Answer:

apply the formula

{a}^{2} - {b}^{2} = (a + b)(a - b)a

2

−b

2

=(a+b)(a−b)

a=x+y+z

b=x-y-z

therefore...,

=(x+y+z+[x-y-z])(x+y+z-[x-y-z])

=(2x)(2y+2z)

=4xy+4xz