
2个回答
展开全部
x²-5xy+6y²
=x²-2xy+3xy+6y²
=x(x-2y)-3y(x-2y)
=(x-2y)(x-3y)
3x²-11x+10
=3x²-6x-5x+10
=3x(x-2)-5(x-2)
=(x-2)(3x-5)
3x²-2xy-8y²
=3x²+4xy-6xy-8y²
=x(3x+4y)-2y(3x+4y)
=(3x+4y)(x-2y)
=x²-2xy+3xy+6y²
=x(x-2y)-3y(x-2y)
=(x-2y)(x-3y)
3x²-11x+10
=3x²-6x-5x+10
=3x(x-2)-5(x-2)
=(x-2)(3x-5)
3x²-2xy-8y²
=3x²+4xy-6xy-8y²
=x(3x+4y)-2y(3x+4y)
=(3x+4y)(x-2y)
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