1.

Find the product of each pair of expressions x - y -z and y +z​

Answer»

Step-by-step EXPLANATION:

(x-y-z) × (y+z)

(xy - y {2}  - zy) + (xz - yz - z {}^{2})

- y {}^{2}   - z {}^{2}   + xy + xz - 2yz



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