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(x+4)=4(x+16)

解答

x (x + 4) = 4 (x + 16)

解答

x = 8, x = - 8

求解步骤

x (x + 4) = 4 (x + 16)

展开

x (x + 4) : x^{2} + 4 x

展开

4 (x + 16) : 4 x + 64

x^{2} + 4 x = 4 x + 64

将

4 x

para o lado esquerdo

x^{2} = 64

对于

x^{2} = f (a)

解为

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

x = 64, x = - 64

64 = 8

- 64 = - 8

x = 8, x = - 8

作图

流行的例子

2 a^{2} = 8

5 x^{2} - 14 x = - 280

- 3 x^{2} - 6 x + 48 = 0

x^{2} - 36 x + 128 = 0

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