Question

Factories (x+2y)²-4(2x-y)²​

Answer 1

EXPLAINED CLEARLY IN THE PICTURE

HOPE IT HELPS...

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Answer 2

Answer:

$(x + y)^{2} - 4(2x - y)^{2} \\ = {x}^{2} + 2xy + {y}^{2} - 4( {4x}^{2} - 4xy + {y}^{2} ) \\ = {x}^{2} + 2xy + {y}^{2} - {16x}^{2} + 16xy + {4y}^{2} \\ = { - 15x}^{2} + 18xy + {5y}^{2}$

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