2x²y-3(2xy-xy)-xy
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2x²y-3(2xy-xy)-xy2x²y-3(2xy-xy)-xy2x²y-3(2xy-xy)-xy2x²y-3(2xy-xy)-xy=2x²y-6
2x²y-3(2xy-xy)-xy
2x²y-3(2xy-xy)-xy
2x²y-3(2xy-xy)-xy
2x²y-3(2xy-xy)-xy=2x²y-6xy+3xy-xy=2x²y-4xy
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2x²y-3(2xy-xy)-xy
2x²y-3(2xy-xy)-xy
2x²y-3(2xy-xy)-xy
2x²y-3(2xy-xy)-xy=2x²y-6xy+3xy-xy=2x²y-4xy