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 >

5x^2-7=-4

解答

5 x^{2} - 7 = - 4

解答

x = \frac{3}{5}, x = - \frac{3}{5}

+1

十进制

x = 0.77459 \dots, x = - 0.77459 \dots

求解步骤

5 x^{2} - 7 = - 4

将

7

到右边

5 x^{2} = 3

两边除以

5

x^{2} = \frac{3}{5}

对于

x^{2} = f (a)

解为

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

x = \frac{3}{5}, x = - \frac{3}{5}

作图

流行的例子

solvefor x,(x-1)(x+k)=-4

so l v e f or x, (x - 1) (x + k) = - 4

x^{2} - \frac{1}{4} x = 0

- 2 x^{2} + 30 = - 7 x

-10x^2+130x-360=0

- 10 x^{2} + 130 x - 360 = 0

4x(5x+1)=x+(2x-3)

4 x (5 x + 1) = x + (2 x - 3)