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+9x^2=16

解答

x^{2} + 9 x^{2} = 16

解答

x = \frac{2 2}{5}, x = - \frac{2 2}{5}

+1

十进制

x = 1.26491 \dots, x = - 1.26491 \dots

求解步骤

x^{2} + 9 x^{2} = 16

同类项相加:

x^{2} + 9 x^{2} = 10 x^{2}

10 x^{2} = 16

两边除以

10

x^{2} = \frac{8}{5}

对于

x^{2} = f (a)

解为

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

x = \frac{8}{5}, x = - \frac{8}{5}

\frac{8}{5} = \frac{2 2}{5}

- \frac{8}{5} = - \frac{2 2}{5}

x = \frac{2 2}{5}, x = - \frac{2 2}{5}

作图

流行的例子

-4x^2+183.88x-525.36=0

- 4 x^{2} + 183.88 x - 525.36 = 0

solvefor x,z=16-x^2-2y^2

so l v e f or x, z = 16 - x^{2} - 2 y^{2}

x (2 x + 5) = 12

x (2 x + 5) = 15

x^{2} - 48 = 11