|x(4-x)+4|=0

解

∣ x (4 - x) + 4 ∣ = 0

x = - 2 (2 - 1) or x = 2 (1 + 2)

十進法表記

x = - 0.82842 \dots, x = 4.82842 \dots

解答ステップ

∣ x (4 - x) + 4 ∣ = 0

絶対規則を適用する:

∣ u ∣ = 0

の場合は

u = 0

x (4 - x) + 4 = 0

x (4 - x) + 4 = 0 : x = - 2 (2 - 1), x = 2 (1 + 2)

x = - 2 (2 - 1) or x = 2 (1 + 2)