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 >

0.5x^2=30

解答

0.5 x^{2} = 30

解答

x = 215, x = - 215

+1

十进制

x = 7.74596 \dots, x = - 7.74596 \dots

求解步骤

0.5 x^{2} = 30

两边除以

0.5

x^{2} = 60

对于

x^{2} = f (a)

解为

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

x = 60, x = - 60

60 = 215

- 60 = - 215

x = 215, x = - 215

作图

流行的例子

2 x^{2} - 5 x + 10 = 0

52 + 2 x = 100 - x^{2}

completesquare x^2+4x-3=0

co m pl e t es q u a re x^{2} + 4 x - 3 = 0

x^2+1=(7x^2)/9+3

x^{2} + 1 = \frac{7 x ^{2}}{9} + 3

- 3 w^{2} = - 213