Factorise x^2+ 2xy - 24y^2
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Answer:
x²+2xy-24y²
= x²+2xy+y²-25y²
= (x+y)²-25y²
= (x+y)²-(5y)²
= (x+y+5y)(x+y-5y)
= (x+6y)(x-4y)
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