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 >

d^2-2d=0

解答

d^{2} - 2 d = 0

解答

d = 2, d = 0

求解步骤

d^{2} - 2 d = 0

使用求根公式求解

d_{1, 2} = \frac{- ( - 2 ) \pm ( - 2 ) ^{2} - 4 \cdot 1 \cdot 0}{2 \cdot 1}

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

d_{1, 2} = \frac{- ( - 2 ) \pm 2}{2 \cdot 1}

将解分隔开

d_{1} = \frac{- ( - 2 ) + 2}{2 \cdot 1}, d_{2} = \frac{- ( - 2 ) - 2}{2 \cdot 1}

d = \frac{- ( - 2 ) + 2}{2 \cdot 1} : 2

d = \frac{- ( - 2 ) - 2}{2 \cdot 1} : 0

二次方程组的解是:

d = 2, d = 0

作图

流行的例子

5 n^{2} + 19 n - 68 = - 2

3 x^{2} + 6 x + 78 = 0

0 = - 2 x^{2} + 8 x

solvefor p,p^2+2pq+q^2=1

so l v e f or p, p^{2} + 2 pq + q^{2} = 1

10x^2-6x-7=4x^2+7x-2

10 x^{2} - 6 x - 7 = 4 x^{2} + 7 x - 2