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不可能的吧.一元二次方程的求根公式你應該知道吧?其中b^2-4ac這一部分稱為一元二次方程的判別式.判別式可以分為兩種情况,一就是判別式的值為非負數,二就是判別式的值為負數.前者會得到實數根,後者因為負數被開方會得…
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