1编号:102782题型:填空题测试正确率:0%
已知,则的值为____.
2编号:79489题型:填空题测试正确率:0%
3编号:54622题型:填空题测试正确率:48.48%
4编号:53912题型:填空题测试正确率:20.9%
若a,b是方程的两个根,则的值为____.
提醒: