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+3x-35=3x+13x+1

解答

x^{2} + 3 x - 35 = 3 x + 13 x + 1

解答

x = \frac{13 + 313}{2}, x = \frac{13 - 313}{2}

+1

十进制

x = 15.34590 \dots, x = - 2.34590 \dots

求解步骤

x^{2} + 3 x - 35 = 3 x + 13 x + 1

整理后得

x^{2} + 3 x - 35 = 16 x + 1

将

1

para o lado esquerdo

x^{2} + 3 x - 36 = 16 x

将

16 x

para o lado esquerdo

x^{2} - 13 x - 36 = 0

使用求根公式求解

x_{1, 2} = \frac{- ( - 13 ) \pm ( - 13 ) ^{2} - 4 \cdot 1 \cdot ( - 36 )}{2 \cdot 1}

(- 13)^{2} - 4 \cdot 1 \cdot (- 36) = 313

x_{1, 2} = \frac{- ( - 13 ) \pm 313}{2 \cdot 1}

将解分隔开

x_{1} = \frac{- ( - 13 ) + 313}{2 \cdot 1}, x_{2} = \frac{- ( - 13 ) - 313}{2 \cdot 1}

x = \frac{- ( - 13 ) + 313}{2 \cdot 1} : \frac{13 + 313}{2}

x = \frac{- ( - 13 ) - 313}{2 \cdot 1} : \frac{13 - 313}{2}

二次方程组的解是:

x = \frac{13 + 313}{2}, x = \frac{13 - 313}{2}

作图

流行的例子

15+0.005V^1=10+0.02V^2

15 + 0.005 V^{1} = 10 + 0.02 V^{2}

(x^{2} + 4 x + 13) = 0

1 x^{2} + 3 x + 4 = 0

x^{2} - 7 + 6 = 0

x^2-4x+3=3+4x-x^2

x^{2} - 4 x + 3 = 3 + 4 x - x^{2}