zs

English

Español

Português

Français

Deutsch

Italiano

Русский

中文(简体)

한국어

日本語

Tiếng Việt

עברית

العربية

受欢迎的代数 >

103.52=0.9x1((0.35)/2)^2420000(1-0.59x420/21)

解答

103.52 = 0.9 \cdot x \cdot 1 \cdot (\frac{0.35}{2})^{2} \cdot 420000 \cdot (1 - 0.59 x \cdot \frac{420}{21})

解答

x = \frac{11576.25 - 77446339.5825}{273199.5}, x = \frac{11576.25 + 77446339.5825}{273199.5}

+1

十进制

x = 0.01016 \dots, x = 0.07458 \dots

求解步骤

103.52 = 0.9 x \cdot 1 \cdot (\frac{0.35}{2})^{2} \cdot 420000 (1 - 0.59 x \frac{420}{21})

展开

0.9 x \cdot 1 \cdot (\frac{0.35}{2})^{2} \cdot 420000 (1 - 0.59 x \frac{420}{21}) : 11576.25 x - 136599.75 x^{2}

103.52 = 11576.25 x - 136599.75 x^{2}

交换两边

11576.25 x - 136599.75 x^{2} = 103.52

将

103.52

para o lado esquerdo

11576.25 x - 136599.75 x^{2} - 103.52 = 0

改写成标准形式

a x^{2} + b x + c = 0

- 136599.75 x^{2} + 11576.25 x - 103.52 = 0

使用求根公式求解

x_{1, 2} = \frac{- 11576.25 \pm 11576.2 5 ^{2} - 4 ( - 136599.75 ) ( - 103.52 )}{2 ( - 136599.75 )}

11576.2 5^{2} - 4 (- 136599.75) (- 103.52) = 77446339.5825

x_{1, 2} = \frac{- 11576.25 \pm 77446339.5825}{2 ( - 136599.75 )}

将解分隔开

x_{1} = \frac{- 11576.25 + 77446339.5825}{2 ( - 136599.75 )}, x_{2} = \frac{- 11576.25 - 77446339.5825}{2 ( - 136599.75 )}

x = \frac{- 11576.25 + 77446339.5825}{2 ( - 136599.75 )} : \frac{11576.25 - 77446339.5825}{273199.5}

x = \frac{- 11576.25 - 77446339.5825}{2 ( - 136599.75 )} : \frac{11576.25 + 77446339.5825}{273199.5}

二次方程组的解是:

x = \frac{11576.25 - 77446339.5825}{273199.5}, x = \frac{11576.25 + 77446339.5825}{273199.5}

作图

流行的例子

3.2x^2-7.1x+2.5=0

3.2 x^{2} - 7.1 x + 2.5 = 0

t^{2} - 2 t - 24 = 0

x^{2} - (k - 3) x + k = 0

4 x^{2} = - 3 (2 x)

w^{2} - 4 w - 5 = 0