|4x+2|=24

解

∣ 4 x + 2 ∣ = 24

x = - \frac{13}{2} or x = \frac{11}{2}

十進法表記

x = - 6.5, x = 5.5

解答ステップ

∣ 4 x + 2 ∣ = 24

絶対規則を適用する:

∣ u ∣ = a, a > 0

の場合は

u = a

u = - a

4 x + 2 = - 24 or 4 x + 2 = 24

4 x + 2 = - 24 or 4 x + 2 = 24

x = - \frac{13}{2} or x = \frac{11}{2}