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)/7)^2=16

解答

x^{2} + (- \frac{3 x}{7})^{2} = 16

解答

x = \frac{14 2}{29}, x = - \frac{14 2}{29}

+1

十进制

x = 3.67658 \dots, x = - 3.67658 \dots

求解步骤

x^{2} + (- \frac{3 x}{7})^{2} = 16

展开

x^{2} + (- \frac{3 x}{7})^{2} : \frac{58 x ^{2}}{49}

\frac{58 x ^{2}}{49} = 16

将

16

para o lado esquerdo

\frac{58 x ^{2}}{49} - 16 = 0

使用求根公式求解

x_{1, 2} = \frac{- 0 \pm 0 ^{2} - 4 \cdot \frac{58}{49} ( - 16 )}{2 \cdot \frac{58}{49}}

0^{2} - 4 \cdot \frac{58}{49} (- 16) = \frac{8 58}{7}

x_{1, 2} = \frac{- 0 \pm \frac{8 58}{7}}{2 \cdot \frac{58}{49}}

将解分隔开

x_{1} = \frac{- 0 + \frac{8 58}{7}}{2 \cdot \frac{58}{49}}, x_{2} = \frac{- 0 - \frac{8 58}{7}}{2 \cdot \frac{58}{49}}

x = \frac{- 0 + \frac{8 58}{7}}{2 \frac{58}{49}} : \frac{14 2}{29}

x = \frac{- 0 - \frac{8 58}{7}}{2 \frac{58}{49}} : - \frac{14 2}{29}

二次方程组的解是:

x = \frac{14 2}{29}, x = - \frac{14 2}{29}

作图

流行的例子

(2m+1)/4+3= m/6-(6-m)/(12)

\frac{2 m + 1}{4} + 3 = \frac{m}{6} - \frac{6 - m}{12}

7 ∣ v - 2 ∣ + 1 = 1

s im pl i f y \frac{8}{9 - i}

因式分解 w^2-7w-8

f a c t or w^{2} - 7 w - 8

s im pl i f y 2^{3} \cdot 2^{7}