Question

(vi) (x + y + z) (x – y + z) + (x + y - z) (-x + y + 2) - 4zx
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Answer 1

Answer:

plz make sure this is correct answer

Explanation:

may this will help you

Answer 2

Answer:

(x+y+z) (x-y+z) + (x+y-z) (-x+y+2) - 4zx

= (x²-xy+xz + xy-y²+yz + xz-yz+z²) + (-x²+xy+2x + -xy+y²+2y + xz+-yz-2z) - 4zx

= z²-zx+2x+2y-2z. ans.....