✨ Best Answer ✨
展開して、＝0 の形にします。
(x－1)(x＋4) ＝ 3x
x²＋3x－4 ＝ 3x
x²－4 ＝ 0
(x＋2)(x－2) ＝ 0
x ＝ ±2
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✨ Best Answer ✨
展開して、＝0 の形にします。
(x－1)(x＋4) ＝ 3x
x²＋3x－4 ＝ 3x
x²－4 ＝ 0
(x＋2)(x－2) ＝ 0
x ＝ ±2
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are also looking at these questions 😉
x²－4 ＝ 0
x² ＝ 4
x ＝ ±2
でもOKです。