"2根号二等于几乘几"...2根号二等于几乘几
"3×根号二等于多少?"...3×根号二等于多少?
"ln2÷2等于根号二"...ln2÷2等于根号二
"tanα=根号2"...tanα=根号2
"4÷根号二怎么算"...4÷根号二怎么算
"5×根号2等于几"...5×根号2等于几
"8×根号2等于几"...8×根号2等于几
"6×根号2等于几"...6×根号2等于几
"2×根号2等于几"...2×根号2等于几
"4÷根号二等于多少"...4÷根号二等于多少