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 >

x^2+2.3x-4.5a=0

解答

x^{2} + 2.3 x - 4.5 a = 0

解答

x = \frac{- 23 + 529 + 1800 a}{20}, x = \frac{- 23 - 529 + 1800 a}{20}

求解步骤

x^{2} + 2.3 x - 4.5 a = 0

在两边乘以

10

10 x^{2} + 23 x - 45 a = 0

使用求根公式求解

x_{1, 2} = \frac{- 23 \pm 2 3 ^{2} - 4 \cdot 10 ( - 45 a )}{2 \cdot 10}

化简

2 3^{2} - 4 \cdot 10 (- 45 a) : 529 + 1800 a

x_{1, 2} = \frac{- 23 \pm 529 + 1800 a}{2 \cdot 10}

将解分隔开

x_{1} = \frac{- 23 + 529 + 1800 a}{2 \cdot 10}, x_{2} = \frac{- 23 - 529 + 1800 a}{2 \cdot 10}

x = \frac{- 23 + 529 + 1800 a}{2 \cdot 10} : \frac{- 23 + 529 + 1800 a}{20}

x = \frac{- 23 - 529 + 1800 a}{2 \cdot 10} : \frac{- 23 - 529 + 1800 a}{20}

二次方程组的解是:

x = \frac{- 23 + 529 + 1800 a}{20}, x = \frac{- 23 - 529 + 1800 a}{20}

作图

流行的例子

6 x^{2} = 5

6 x^{2} = 8

6 x^{2} = 9

6 x^{2} - 72 x + 30 = 0

x = x^{2} - 8 x + 15