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 >

5(x+3)^2-7=68

解答

5 (x + 3)^{2} - 7 = 68

解答

x = 15 - 3, x = - 15 - 3

+1

十进制

x = 0.87298 \dots, x = - 6.87298 \dots

求解步骤

5 (x + 3)^{2} - 7 = 68

将

7

到右边

5 (x + 3)^{2} = 75

两边除以

5

(x + 3)^{2} = 15

对于

(g (x))^{2} = f (a)

解为

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

解

x + 3 = 15 : x = 15 - 3

解

x + 3 = - 15 : x = - 15 - 3

二次方程组的解是:

x = 15 - 3, x = - 15 - 3

作图

流行的例子

4 x (x - 1) = 3

solvefor t,f=2t-3f(t^2)

so l v e f or t, f = 2 t - 3 f (t^{2})

y^{2} + y - 42 = 0

(x - 6) (x - 8) = - 1

- 3 x^{2} - 18 x - 26 = 0