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1编号:6563题型:单选题测试正确率:58.82%

当x=1,y=2时,-x2y+(2xy2+x2y)-(2xy2+4x3y)的值为()

2编号:6562题型:单选题测试正确率:88.24%

当x=-1,y=1时,xy-(3x2y+xy)+(3x2y+6x3y)的值为()

3编号:6561题型:单选题测试正确率:88.24%

当x=-2,y=1时,2xy2+(3xy-2xy2)+(4xy3-3xy)的值为()

4编号:6560题型:单选题测试正确率:100.0%

当x=-1,y=1时,2xy+(3xy2-2xy)+( 4x2y -3xy2)的值为()

5编号:6559题型:单选题测试正确率:75.0%

当x=-1,y=1时,-xy+(3x2y+xy)-(3x2y-5x3y)的值为()

6编号:6558题型:单选题测试正确率:50.0%

当x=-2,y=1时,x2y-(2xy2+x2y)+(2xy2+4x3y)的值为()

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