已知x+3y=0,求x³+3x²y-2x-6y的值.

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已知x+3y=0,求x³+3x²y-2x-6y的值.已知x+3y=0,求x³+3x²y-2x-6y的值.已知x+3y=0,求x³+3x²y-

已知x+3y=0,求x³+3x²y-2x-6y的值.
已知x+3y=0,求x³+3x²y-2x-6y的值.

已知x+3y=0,求x³+3x²y-2x-6y的值.
=x^2(x+3y) -2*(x+3y) = 0