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1编号:19856题型:单选题测试正确率:37.5%

已知-x+2y=6,则3(x-2y)2-5(x-2y)+6=()

2编号:6566题型:单选题测试正确率:83.33%

当x=-3,y=-4时,2x2y-(5xy2+2x2y)+( 5xy2+xy)的值为()

3编号:6565题型:单选题测试正确率:50.0%

当x=-2,y=1时,-3xy2+(5y3+3xy2)-(5y3+3x3)的值为()

4编号:6564题型:单选题测试正确率:83.33%

当x=-1,y=1时,2x3+(3y3-2x3)+(4x2y-3y3)的值为()

5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()

6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()

7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()

8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()

9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()

10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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