2x^2 - 3x + 1 = 0 を二次方程式の公式を使って解く
How to Solve 2x^2 + 3x + 1 = 0 by Factoring
2x^2 - 3x - 1 = 0
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2x^2-3x+1=0 。因数分解による二次方程式の解き方。解法
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How to Solve 2x^2 + x - 1 = 0 by Factoring