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 >

25z^2-110z+121=16

解答

25 z^{2} - 110 z + 121 = 16

解答

z = 3, z = \frac{7}{5}

+1

十进制

z = 3, z = 1.4

求解步骤

25 z^{2} - 110 z + 121 = 16

将

16

para o lado esquerdo

25 z^{2} - 110 z + 105 = 0

使用求根公式求解

z_{1, 2} = \frac{- ( - 110 ) \pm ( - 110 ) ^{2} - 4 \cdot 25 \cdot 105}{2 \cdot 25}

(- 110)^{2} - 4 \cdot 25 \cdot 105 = 40

z_{1, 2} = \frac{- ( - 110 ) \pm 40}{2 \cdot 25}

将解分隔开

z_{1} = \frac{- ( - 110 ) + 40}{2 \cdot 25}, z_{2} = \frac{- ( - 110 ) - 40}{2 \cdot 25}

z = \frac{- ( - 110 ) + 40}{2 \cdot 25} : 3

z = \frac{- ( - 110 ) - 40}{2 \cdot 25} : \frac{7}{5}

二次方程组的解是:

z = 3, z = \frac{7}{5}

作图

流行的例子

x^{2} + 3 x + \frac{3}{2} = 0

-x^2+1=-5x^2+4x

- x^{2} + 1 = - 5 x^{2} + 4 x

x^{2} - 17 x + 4 = 0

3 x^{2} + 4 x = 8

5 x^{2} + 8 x - 17 = 0