(6xy²(x²-3xy)-(-3x²y²))÷3x²y²那么懒

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(6xy²(x²-3xy)-(-3x²y²))÷3x²y²那么懒
(6xy²(x²-3xy)-(-3x²y²))÷3x²y²
那么懒

(6xy²(x²-3xy)-(-3x²y²))÷3x²y²那么懒
=2x-6y+1

2x-6y+1