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-6)(x-10)=-4

解答

(x - 6) (x - 10) = - 4

解答

x = 8

求解步骤

(x - 6) (x - 10) = - 4

展开

(x - 6) (x - 10) : x^{2} - 16 x + 60

x^{2} - 16 x + 60 = - 4

将

4

para o lado esquerdo

x^{2} - 16 x + 64 = 0

使用求根公式求解

x_{1, 2} = \frac{- ( - 16 ) \pm ( - 16 ) ^{2} - 4 \cdot 1 \cdot 64}{2 \cdot 1}

(- 16)^{2} - 4 \cdot 1 \cdot 64 = 0

x_{1, 2} = \frac{- ( - 16 ) \pm 0}{2 \cdot 1}

x = \frac{- ( - 16 )}{2 \cdot 1}

\frac{- ( - 16 )}{2 \cdot 1} = 8

x = 8

二次方程组的解是:

x = 8

作图

流行的例子

Q^2-3092.8Q+120000=0

Q^{2} - 3092.8 Q + 120000 = 0

completesquare-3x^2-18x+2=0

co m pl e t es q u a re - 3 x^{2} - 18 x + 2 = 0

6x-12=-2(x+3)2+(2x+3)(x-5)

6 x - 12 = - 2 (x + 3) 2 + (2 x + 3) (x - 5)

-30-13x-15x^2=0

- 30 - 13 x - 15 x^{2} = 0

y^{2} - 12 y = 28