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 >

completesquare x^2-6x+3=0

解答

x^{2} - 6 x + 3 = 0

解答

x = 6 + 3, x = - 6 + 3

+1

十进制

x = 5.44948 \dots, x = 0.55051 \dots

求解步骤

x^{2} - 6 x + 3 = 0

将

3

到右边

x^{2} - 6 x = - 3

改写为形式

(x + a)^{2} = b

(x - 3)^{2} = 6

若

f^{2} (x) = a

，解为

f (x) = a, - a

解

x - 3 = 6 : x = 6 + 3

解

x - 3 = - 6 : x = - 6 + 3

二次方程组的解是:

x = 6 + 3, x = - 6 + 3

作图

流行的例子

4 w^{2} = - 10 w

solvefor x,f=(x-h)^2+k

so l v e f or x, f = (x - h)^{2} + k

- 4 x^{2} + 5 x - 9 = 0

5 n^{2} - 18 n + 12 = 0

x^{2} - 10 x + 25 = 144