已知x^1/2+x^-1/2+3,求x+x^-1的值有错,已知x^1/2+x^-1/2=3,求x+x^-1的值
来源:学生作业帮助网 编辑:作业帮 时间:2024/06/11 03:57:10
![已知x^1/2+x^-1/2+3,求x+x^-1的值有错,已知x^1/2+x^-1/2=3,求x+x^-1的值](/uploads/image/z/754125-69-5.jpg?t=%E5%B7%B2%E7%9F%A5x%5E1%2F2%2Bx%5E-1%2F2%2B3%2C%E6%B1%82x%2Bx%5E-1%E7%9A%84%E5%80%BC%E6%9C%89%E9%94%99%2C%E5%B7%B2%E7%9F%A5x%5E1%2F2%2Bx%5E-1%2F2%3D3%2C%E6%B1%82x%2Bx%5E-1%E7%9A%84%E5%80%BC)
已知x^1/2+x^-1/2+3,求x+x^-1的值有错,已知x^1/2+x^-1/2=3,求x+x^-1的值
已知x^1/2+x^-1/2+3,求x+x^-1的值
有错,已知x^1/2+x^-1/2=3,求x+x^-1的值
已知x^1/2+x^-1/2+3,求x+x^-1的值有错,已知x^1/2+x^-1/2=3,求x+x^-1的值
已知x^1/2+x^-1/2=3,
则两边同时平方得
x+x^(-1)+2=9
x+x^-1=7