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 >

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

解答

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

解答

x = 1

求解步骤

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

乘开

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

x^{3} + 6 x^{2} - 7 x + 24 = (x^{2} + 3 x + 2) (x + 3)

乘开

(x^{2} + 3 x + 2) (x + 3) : x^{3} + 6 x^{2} + 11 x + 6

x^{3} + 6 x^{2} - 7 x + 24 = x^{3} + 6 x^{2} + 11 x + 6

展开

84 + (x + 4) (x - 3) (x + 5) : x^{3} + 6 x^{2} - 7 x + 24

x^{3} + 6 x^{2} - 7 x + 24 = x^{3} + 6 x^{2} + 11 x + 6

将

24

到右边

x^{3} + 6 x^{2} - 7 x = x^{3} + 6 x^{2} + 11 x - 18

两边减去

x^{3} + 6 x^{2} + 11 x

x^{3} + 6 x^{2} - 7 x - (x^{3} + 6 x^{2} + 11 x) = x^{3} + 6 x^{2} + 11 x - 18 - (x^{3} + 6 x^{2} + 11 x)

化简

- 18 x = - 18

两边除以

- 18

x = 1

作图

流行的例子

2a(m-n)+(m^2-m-n^2+n)*d=2n-2m

2 a (m - n) + (m^{2} - m - n^{2} + n) \cdot d = 2 n - 2 m

(3-4x)/3 =(3-2x)/6

\frac{3 - 4 x}{3} = \frac{3 - 2 x}{6}

80*0.82+0.18x=75

80 \cdot 0.82 + 0.18 x = 75

16.5 - 8 = x - 2

solvefor x,(x-3)2+(y-1)2=4

so l v e f or x, (x - 3) 2 + (y - 1) 2 = 4