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 >

9/16-(x^2)/(81)=0

解答

\frac{9}{16} - \frac{x ^{2}}{81} = 0

解答

x = \frac{27}{4}, x = - \frac{27}{4}

+1

十进制

x = 6.75, x = - 6.75

求解步骤

\frac{9}{16} - \frac{x ^{2}}{81} = 0

将

\frac{9}{16}

到右边

- \frac{x ^{2}}{81} = - \frac{9}{16}

在两边乘以

81

- x^{2} = - \frac{729}{16}

两边除以

- 1

x^{2} = \frac{729}{16}

对于

x^{2} = f (a)

解为

x = f (a), - f (a)

x = \frac{729}{16}, x = - \frac{729}{16}

\frac{729}{16} = \frac{27}{4}

- \frac{729}{16} = - \frac{27}{4}

x = \frac{27}{4}, x = - \frac{27}{4}

作图

流行的例子

0.4x^2+1.5x-1.3=0

0.4 x^{2} + 1.5 x - 1.3 = 0

completesquare s^2+s+5

co m pl e t es q u a re s^{2} + s + 5

(-(sqrt(11))/4)^2+y^2=1

(- \frac{11}{4})^{2} + y^{2} = 1

因式分解 x^2+9x+18=0

f a c t or x^{2} + 9 x + 18 = 0

x^2-7.2x+12.8=0

x^{2} - 7.2 x + 12.8 = 0