来自孟婥的问题
x+1/x=2x2+1/x2=?x+1/x=2x2+1/x2=?
x+1/x=2x2+1/x2=?
x+1/x=2x2+1/x2=?
1回答
2020-05-10 22:15
x+1/x=2x2+1/x2=?x+1/x=2x2+1/x2=?
x+1/x=2x2+1/x2=?
x+1/x=2x2+1/x2=?
(x+1/x)²=4
x²+2+1/x²=4
x²+1/x²=2