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 >

h^2+7h=44

解答

h^{2} + 7 h = 44

解答

h = 4, h = - 11

求解步骤

h^{2} + 7 h = 44

将

44

para o lado esquerdo

h^{2} + 7 h - 44 = 0

使用求根公式求解

h_{1, 2} = \frac{- 7 \pm 7 ^{2} - 4 \cdot 1 \cdot ( - 44 )}{2 \cdot 1}

7^{2} - 4 \cdot 1 \cdot (- 44) = 15

h_{1, 2} = \frac{- 7 \pm 15}{2 \cdot 1}

将解分隔开

h_{1} = \frac{- 7 + 15}{2 \cdot 1}, h_{2} = \frac{- 7 - 15}{2 \cdot 1}

h = \frac{- 7 + 15}{2 \cdot 1} : 4

h = \frac{- 7 - 15}{2 \cdot 1} : - 11

二次方程组的解是:

h = 4, h = - 11

作图

流行的例子

x^{2} - 3 x = 5

4 x^{2} + 19 x - 22 = 0

4 (7 - h) = 8

-6x-x+10=15-7x-5

- 6 x - x + 10 = 15 - 7 x - 5

4 x^{2} + 4 x - 35 = 0