Question

The simplified form of (x+y+z) (x+y-z)

Answer 1

Answer:

Step-by-step explanation:

(x+y+z)(x+y-z)

= x^2+xy - xz + yx + y^2- yz + zx + zy- z^2

= x^2+y^2-z^2+2xy.

Therefore simplified form is x^2+y^2-z^2+2xy

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