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 >

16.1t^2-200t-200=0

解答

16.1 t^{2} - 200 t - 200 = 0

解答

t = \frac{20 ( 50 + 3305 )}{161}, t = \frac{20 ( 50 - 3305 )}{161}

+1

十进制

t = 13.35268 \dots, t = - 0.93032 \dots

求解步骤

16.1 t^{2} - 200 t - 200 = 0

在两边乘以

10

161 t^{2} - 2000 t - 2000 = 0

使用求根公式求解

t_{1, 2} = \frac{- ( - 2000 ) \pm ( - 2000 ) ^{2} - 4 \cdot 161 ( - 2000 )}{2 \cdot 161}

(- 2000)^{2} - 4 \cdot 161 (- 2000) = 403305

t_{1, 2} = \frac{- ( - 2000 ) \pm 40 3305}{2 \cdot 161}

将解分隔开

t_{1} = \frac{- ( - 2000 ) + 40 3305}{2 \cdot 161}, t_{2} = \frac{- ( - 2000 ) - 40 3305}{2 \cdot 161}

t = \frac{- ( - 2000 ) + 40 3305}{2 \cdot 161} : \frac{20 ( 50 + 3305 )}{161}

t = \frac{- ( - 2000 ) - 40 3305}{2 \cdot 161} : \frac{20 ( 50 - 3305 )}{161}

二次方程组的解是:

t = \frac{20 ( 50 + 3305 )}{161}, t = \frac{20 ( 50 - 3305 )}{161}

作图

流行的例子

3 x^{2} - 6 x - 244 = 0

quadraticformula x^2-3x=0

q u a d r a t i c f or m u l a x^{2} - 3 x = 0

6 x (x - 1) = 35 - 7 x

solvefor x,f(x+1)=x^2-x

so l v e f or x, f (x + 1) = x^{2} - x

a=(2x+6)*(2x+6)

a = (2 x + 6) \cdot (2 x + 6)