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+3)^2=(x-1)^2+18

解答

(x + 3)^{2} = (x - 1)^{2} + 18

解答

x = \frac{5}{4}

+1

十进制

x = 1.25

求解步骤

(x + 3)^{2} = (x - 1)^{2} + 18

展开

(x + 3)^{2} : x^{2} + 6 x + 9

展开

(x - 1)^{2} + 18 : x^{2} - 2 x + 19

x^{2} + 6 x + 9 = x^{2} - 2 x + 19

将

9

到右边

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

两边减去

x^{2} - 2 x

x^{2} + 6 x - (x^{2} - 2 x) = x^{2} - 2 x + 10 - (x^{2} - 2 x)

化简

8 x = 10

两边除以

8

x = \frac{5}{4}

作图

流行的例子

solvefor x,-2x+3y=4

so l v e f or x, - 2 x + 3 y = 4

a x - b = c, a \neq = 0

-10+15x=6x-(x+2)+(3-x)

- 10 + 15 x = 6 x - (x + 2) + (3 - x)

9 x = 14

- 8 = 10 + c