Factorise 25x²-32y² .
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I think your question is wrong. Because there is no ² value for 32.
25x²-36y².
(5x)²-(6y)².
It is in the form of a²-b²=(a+b)(a-b) where a=5x & b=6y.
(5x)²-(6y)²=(5x+6y)(5x-6y).
I think this is your answer.
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