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受欢迎的代数 >

3d^2-4d=0

解答

3 d^{2} - 4 d = 0

解答

d = \frac{4}{3}, d = 0

+1

十进制

d = 1.33333 \dots, d = 0

求解步骤

3 d^{2} - 4 d = 0

使用求根公式求解

d_{1, 2} = \frac{- ( - 4 ) \pm ( - 4 ) ^{2} - 4 \cdot 3 \cdot 0}{2 \cdot 3}

(- 4)^{2} - 4 \cdot 3 \cdot 0 = 4

d_{1, 2} = \frac{- ( - 4 ) \pm 4}{2 \cdot 3}

将解分隔开

d_{1} = \frac{- ( - 4 ) + 4}{2 \cdot 3}, d_{2} = \frac{- ( - 4 ) - 4}{2 \cdot 3}

d = \frac{- ( - 4 ) + 4}{2 \cdot 3} : \frac{4}{3}

d = \frac{- ( - 4 ) - 4}{2 \cdot 3} : 0

二次方程组的解是:

d = \frac{4}{3}, d = 0

作图

流行的例子

8 x^{2} + 9 = 0

2c(2c+1)=c(c-3)-3

2 c (2 c + 1) = c (c - 3) - 3

4 x^{2} = 24 - 2 x^{2}

completesquare x^2+18x+42=0

co m pl e t es q u a re x^{2} + 18 x + 42 = 0

3 x^{2} - 24 = - 5