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 >

t^2+4t-17=t

解答

t^{2} + 4 t - 17 = t

解答

t = \frac{- 3 + 77}{2}, t = \frac{- 3 - 77}{2}

+1

十进制

t = 2.88748 \dots, t = - 5.88748 \dots

求解步骤

t^{2} + 4 t - 17 = t

将

t

para o lado esquerdo

t^{2} + 3 t - 17 = 0

使用求根公式求解

t_{1, 2} = \frac{- 3 \pm 3 ^{2} - 4 \cdot 1 \cdot ( - 17 )}{2 \cdot 1}

3^{2} - 4 \cdot 1 \cdot (- 17) = 77

t_{1, 2} = \frac{- 3 \pm 77}{2 \cdot 1}

将解分隔开

t_{1} = \frac{- 3 + 77}{2 \cdot 1}, t_{2} = \frac{- 3 - 77}{2 \cdot 1}

t = \frac{- 3 + 77}{2 \cdot 1} : \frac{- 3 + 77}{2}

t = \frac{- 3 - 77}{2 \cdot 1} : \frac{- 3 - 77}{2}

二次方程组的解是:

t = \frac{- 3 + 77}{2}, t = \frac{- 3 - 77}{2}

作图

流行的例子

3 (x + 1)^{2} = 18

15 c^{2} - 8 c - 12 = 0

- 3 x^{2} + 15 x - 18 = 0

21 x^{2} - 13 - 20 = 0

\frac{1}{2} x^{2} + 3 x = 8