235x^2+0.2756x+0.08544=0

解答

235 x^{2} + 0.2756 x + 0.08544 = 0

x = - \frac{0.2756}{470} + i \frac{80.23764 \dots}{470}, x = - \frac{0.2756}{470} - i \frac{80.23764 \dots}{470}

求解步骤

235 x^{2} + 0.2756 x + 0.08544 = 0

使用求根公式求解

x_{1, 2} = \frac{- 0.2756 \pm 0.275 6 ^{2} - 4 \cdot 235 \cdot 0.08544}{2 \cdot 235}

化简

0.275 6^{2} - 4 \cdot 235 \cdot 0.08544 : 80.23764 \dots i

x_{1, 2} = \frac{- 0.2756 \pm 80.23764 \dots i}{2 \cdot 235}

将解分隔开

x_{1} = \frac{- 0.2756 + 80.23764 \dots i}{2 \cdot 235}, x_{2} = \frac{- 0.2756 - 80.23764 \dots i}{2 \cdot 235}

x = \frac{- 0.2756 + 80.23764 \dots i}{2 \cdot 235} : - \frac{0.2756}{470} + i \frac{80.23764 \dots}{470}

x = \frac{- 0.2756 - 80.23764 \dots i}{2 \cdot 235} : - \frac{0.2756}{470} - i \frac{80.23764 \dots}{470}

二次方程组的解是:

x = - \frac{0.2756}{470} + i \frac{80.23764 \dots}{470}, x = - \frac{0.2756}{470} - i \frac{80.23764 \dots}{470}

(x - 6)^{2} = 16

\frac{3 x - 1}{7} - \frac{2 - 4 x}{3} \geq \frac{- 5 - 14}{14} + 7 x + 6

0.5 (2.8 x + 1.7) = 0.43

s im pl i f y 3 (\frac{1}{3})^{2} - \frac{1}{3}

1 \cdot 1 0^{- 3} = \frac{\frac{x}{506.4}}{0.025}