Question

Simplify
(2x +y-z)2 - (2x -y+z)2

Answer 1

Answer:

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

(2x X 2 + 2y - 2z) - ( 2x X 2 - 2y + 2z)

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

4x + 2y -2z - 4x + 2y -2z

4x - 4x + 2y - 2y - 2z - 2z

0 + 0 - 4z

Therefore, answer is - 4z.

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