Question

9(2x-y) ^2 -4 (x + 2y) ^2 ( Factorise the following).​

Answer 1

Answer:

9(2x-y)² - 4(x+2y)²

={3(2x-y)}² - {2(x+2y)}²

=(6x-3y)² - (2x+4y)²

=(6x-3y+2x+4y)(6x-3y-2x-4y)

=(8x+y)(4x-7y)

Step-by-step explanation:

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