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 >

2k^2-4(1)(9)=0

解答

2 k^{2} - 4 (1) (9) = 0

解答

k = 32, k = - 32

+1

十进制

k = 4.24264 \dots, k = - 4.24264 \dots

求解步骤

2 k^{2} - 4 (1) (9) = 0

展开

2 k^{2} - 4 (1) (9) : 2 k^{2} - 36

2 k^{2} - 36 = 0

将

36

到右边

2 k^{2} = 36

两边除以

2

k^{2} = 18

对于

x^{2} = f (a)

解为

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

k = 18, k = - 18

18 = 32

- 18 = - 32

k = 32, k = - 32

作图

流行的例子

completesquare-2x^2+12x-14

co m pl e t es q u a re - 2 x^{2} + 12 x - 14

x^{2} + 5 x + 18 = 0

5 x^{2} + 39 x - 125 = 0

solvefor x,y=-x^2+10x-18

so l v e f or x, y = - x^{2} + 10 x - 18

(X-15)^2+(X+4+7)^2=9

(X - 15)^{2} + (X + 4 + 7)^{2} = 9