解方程:
x^2 - 1 = 0.
>>>>>
[if gte mso 9]>
Are you looking for an answer beyond math?
x^2 = 1
x = +/-1.
解方程:
x^2 - 1 = 0.
>>>>>
[if gte mso 9]>
Are you looking for an answer beyond math?
x^2 = 1
x = +/-1.
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