factorise 6x^2-11xy - 10^2
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Answer:
6x²-(15-4)xy-10y²
= 6x²-(15xy-4xy)-10y²
= 6x²-15xy-4xy-10y²
= 3x(2x-5y)+2y(2x-5y)
=(2x-5y)(3x-2y)
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