Question

find the product of x-y-z and y+z​

Answer 1

Answer:

$= (y + z)(x - y - z) \\ = y(x - y - z) + z( \times - y - z) \\ = xy - {y}^{2} -yz + xz - yz - {z}^{2} \\ xy - {y}^{2} - 2yz + xz - {z}^{2}$

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Answer 2

Answer:

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