-9.28x^2+|9x|=2

解

- 9.28 x^{2} + ∣ 9 x ∣ = 2

x = - \frac{5}{8} or x = - \frac{10}{29} or x = \frac{10}{29} or x = \frac{5}{8}

十進法表記

x = - 0.625, x = - 0.34482 \dots, x = 0.34482 \dots, x = 0.625

解答ステップ

- 9.28 x^{2} + ∣ 9 x ∣ = 2

正と負の区間を求める

x < 0, x \geq 0

各区間の不等式を解く

(x = - \frac{5}{8} or x = - \frac{10}{29}) or (x = \frac{10}{29} or x = \frac{5}{8})

x = - \frac{5}{8} or x = - \frac{10}{29} or x = \frac{10}{29} or x = \frac{5}{8}