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Given (x+2y)^2 - 4(2x - y)^2
It is in the form of x^2 - y^2 = (x+y)(x-y).
= (2(2x-y)+(x+2y))(x+2y)-2(2x-y) can be written as
= (x + 2y + 2(2x - y)) (x + 2y - 2(2x-y))
= (x + 2y + 4x - 2y) (x + 2y - 4x + 2y)
= (5x)(-3x + 4y)
(or)
5x(4y - 3x).
Hope this helps!
It is in the form of x^2 - y^2 = (x+y)(x-y).
= (2(2x-y)+(x+2y))(x+2y)-2(2x-y) can be written as
= (x + 2y + 2(2x - y)) (x + 2y - 2(2x-y))
= (x + 2y + 4x - 2y) (x + 2y - 4x + 2y)
= (5x)(-3x + 4y)
(or)
5x(4y - 3x).
Hope this helps!
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