Question

( + y + z) ( + y – z)

Answer 1

Step-by-step explanation:

$(y + z)(y - z) \\ = y \times (y - z) + z \times (y - z) \\ = {y}^{2} - yz + zy - {z}^{2} \\ = {y}^{2} - {z}^{2}$

here you go

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