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 >

5x^3-2x^2-35x+14=0

解答

5 x^{3} - 2 x^{2} - 35 x + 14 = 0

解答

x = \frac{2}{5}, x = - 7, x = 7

+1

十进制

x = 0.4, x = - 2.64575 \dots, x = 2.64575 \dots

求解步骤

5 x^{3} - 2 x^{2} - 35 x + 14 = 0

因式分解

5 x^{3} - 2 x^{2} - 35 x + 14 : (5 x - 2) (x + 7) (x - 7)

(5 x - 2) (x + 7) (x - 7) = 0

使用零因数法则： If

ab = 0

then

a = 0

or

b = 0

5 x - 2 = 0 or x + 7 = 0 or x - 7 = 0

解

5 x - 2 = 0 : x = \frac{2}{5}

解

x + 7 = 0 : x = - 7

解

x - 7 = 0 : x = 7

解为

x = \frac{2}{5}, x = - 7, x = 7

作图

流行的例子

22 - 1 w^{3} = - 7

x^{3} + 11 x + 28 = 0

x^{3} - 8 x - 5 = 0

x^3+60=23x+2x^2

x^{3} + 60 = 23 x + 2 x^{2}

1 = m^{3}