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 >

-7n^2=-488

解答

- 7 n^{2} = - 488

解答

n = \frac{2 122}{7}, n = - \frac{2 122}{7}

+1

十进制

n = 8.34950 \dots, n = - 8.34950 \dots

求解步骤

- 7 n^{2} = - 488

两边除以

- 7

n^{2} = \frac{488}{7}

对于

x^{2} = f (a)

解为

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

n = \frac{488}{7}, n = - \frac{488}{7}

\frac{488}{7} = \frac{2 122}{7}

- \frac{488}{7} = - \frac{2 122}{7}

n = \frac{2 122}{7}, n = - \frac{2 122}{7}

作图

流行的例子

x^{2} + 1 x - 7 = 0

solvefor x,(x-2)^2=3

so l v e f or x, (x - 2)^{2} = 3

completesquare 3x^2-x-3

co m pl e t es q u a re 3 x^{2} - x - 3

- x^{2} - 6 x - 10 = 0

(x+1)^2=(x+2)^2+(x+3)^2

(x + 1)^{2} = (x + 2)^{2} + (x + 3)^{2}