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受欢迎的代数 >

4m^2-2m-6=0

解答

4 m^{2} - 2 m - 6 = 0

解答

m = \frac{3}{2}, m = - 1

+1

十进制

m = 1.5, m = - 1

求解步骤

4 m^{2} - 2 m - 6 = 0

使用求根公式求解

m_{1, 2} = \frac{- ( - 2 ) \pm ( - 2 ) ^{2} - 4 \cdot 4 ( - 6 )}{2 \cdot 4}

(- 2)^{2} - 4 \cdot 4 (- 6) = 10

m_{1, 2} = \frac{- ( - 2 ) \pm 10}{2 \cdot 4}

将解分隔开

m_{1} = \frac{- ( - 2 ) + 10}{2 \cdot 4}, m_{2} = \frac{- ( - 2 ) - 10}{2 \cdot 4}

m = \frac{- ( - 2 ) + 10}{2 \cdot 4} : \frac{3}{2}

m = \frac{- ( - 2 ) - 10}{2 \cdot 4} : - 1

二次方程组的解是:

m = \frac{3}{2}, m = - 1

作图

流行的例子

solvefor d,h=-0.001(d-20)^2+6

so l v e f or d, h = - 0.001 (d - 20)^{2} + 6

2 x^{2} - 3 x = - 4

2 x^{2} - 3 x = - 7

6x^2-130x+500=0

6 x^{2} - 130 x + 500 = 0

D^{2} + 2 D + 1 = 0