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)(x-3)=(x-4)(x+9)

解答

(x - 2) (x - 3) = (x - 4) (x + 9)

解答

x = \frac{21}{5}

+1

十进制

x = 4.2

求解步骤

(x - 2) (x - 3) = (x - 4) (x + 9)

展开

(x - 2) (x - 3) : x^{2} - 5 x + 6

展开

(x - 4) (x + 9) : x^{2} + 5 x - 36

x^{2} - 5 x + 6 = x^{2} + 5 x - 36

将

6

到右边

x^{2} - 5 x = x^{2} + 5 x - 42

两边减去

x^{2} + 5 x

x^{2} - 5 x - (x^{2} + 5 x) = x^{2} + 5 x - 42 - (x^{2} + 5 x)

化简

- 10 x = - 42

两边除以

- 10

x = \frac{21}{5}

作图

流行的例子

2-4(2x+3)=-6-2(-3x+8)

2 - 4 (2 x + 3) = - 6 - 2 (- 3 x + 8)

7 x = 98

\frac{n + 4}{8} = - 2

solvefor x,3x-8y=1

so l v e f or x, 3 x - 8 y = 1

\frac{y - 3}{2} = \frac{y}{5}