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 >

-0.000003x^2-0.02x+100=0

解答

- 0.000003 x^{2} - 0.02 x + 100 = 0

解答

x = - \frac{0.02 + 0.0016}{0.000006}, x = \frac{0.0016 - 0.02}{0.000006}

+1

十进制

x = - 10000, x = 3333.33333 \dots

求解步骤

- 0.000003 x^{2} - 0.02 x + 100 = 0

使用求根公式求解

x_{1, 2} = \frac{- ( - 0.02 ) \pm ( - 0.02 ) ^{2} - 4 ( - 0.000003 ) \cdot 100}{2 ( - 0.000003 )}

(- 0.02)^{2} - 4 (- 0.000003) \cdot 100 = 0.0016

x_{1, 2} = \frac{- ( - 0.02 ) \pm 0.0016}{2 ( - 0.000003 )}

将解分隔开

x_{1} = \frac{- ( - 0.02 ) + 0.0016}{2 ( - 0.000003 )}, x_{2} = \frac{- ( - 0.02 ) - 0.0016}{2 ( - 0.000003 )}

x = \frac{- ( - 0.02 ) + 0.0016}{2 ( - 0.000003 )} : - \frac{0.02 + 0.0016}{0.000006}

x = \frac{- ( - 0.02 ) - 0.0016}{2 ( - 0.000003 )} : \frac{0.0016 - 0.02}{0.000006}

二次方程组的解是:

x = - \frac{0.02 + 0.0016}{0.000006}, x = \frac{0.0016 - 0.02}{0.000006}

作图

流行的例子

6 q^{2} + 7 q - 20 = 0

0=210-205.06x+4.9x^2

0 = 210 - 205.06 x + 4.9 x^{2}

r^{2} - 10 r + 21 = 0

x(x+6)=16(x+x+6)-9

x (x + 6) = 16 (x + x + 6) - 9

2 0^{2} + 1 6^{2} = x^{2}