Question

Factorise
2(x-2y)^2 - 50y^2

Answer 1

Answer:

2(x-2y)^2 - 50y^2

=2((x-2y)^2 - (25y)^2))

=2((x-2y)^2 - (5y)^2))

=2(x-2y+5y) (x-2y-5y)

=2(x+3y) (x-7y)

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