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 >

0=0.8796429+37.30054x-39.26339x^2

解答

0 = 0.8796429 + 37.30054 x - 39.26339 x^{2}

解答

x = - \frac{- 37.30054 + 1529.48133 \dots}{78.52678}, x = \frac{37.30054 + 1529.48133 \dots}{78.52678}

+1

十进制

x = - 0.02302 \dots, x = 0.97303 \dots

求解步骤

0 = 0.8796429 + 37.30054 x - 39.26339 x^{2}

交换两边

0.8796429 + 37.30054 x - 39.26339 x^{2} = 0

改写成标准形式

a x^{2} + b x + c = 0

- 39.26339 x^{2} + 37.30054 x + 0.8796429 = 0

使用求根公式求解

x_{1, 2} = \frac{- 37.30054 \pm 37.3005 4 ^{2} - 4 ( - 39.26339 ) \cdot 0.8796429}{2 ( - 39.26339 )}

37.3005 4^{2} - 4 (- 39.26339) \cdot 0.8796429 = 1529.48133 \dots

x_{1, 2} = \frac{- 37.30054 \pm 1529.48133 \dots}{2 ( - 39.26339 )}

将解分隔开

x_{1} = \frac{- 37.30054 + 1529.48133 \dots}{2 ( - 39.26339 )}, x_{2} = \frac{- 37.30054 - 1529.48133 \dots}{2 ( - 39.26339 )}

x = \frac{- 37.30054 + 1529.48133 \dots}{2 ( - 39.26339 )} : - \frac{- 37.30054 + 1529.48133 \dots}{78.52678}

x = \frac{- 37.30054 - 1529.48133 \dots}{2 ( - 39.26339 )} : \frac{37.30054 + 1529.48133 \dots}{78.52678}

二次方程组的解是:

x = - \frac{- 37.30054 + 1529.48133 \dots}{78.52678}, x = \frac{37.30054 + 1529.48133 \dots}{78.52678}

作图

流行的例子

(5+7x)/(1+2x)<= 4

\frac{5 + 7 x}{1 + 2 x} \leq 4

((11)^2+64)/((11))

\frac{( 11 ) ^{2} + 64}{( 11 )}

2 x - 3 \geq 4 x - 1

4 - (2 x - 3) = 3

4(1-x)+3x=-2(x+1)

4 (1 - x) + 3 x = - 2 (x + 1)