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受欢迎的代数 >

3m^2-13m+4=-4

解答

3 m^{2} - 13 m + 4 = - 4

解答

m = \frac{13 + 73}{6}, m = \frac{13 - 73}{6}

+1

十进制

m = 3.59066 \dots, m = 0.74266 \dots

求解步骤

3 m^{2} - 13 m + 4 = - 4

将

4

para o lado esquerdo

3 m^{2} - 13 m + 8 = 0

使用求根公式求解

m_{1, 2} = \frac{- ( - 13 ) \pm ( - 13 ) ^{2} - 4 \cdot 3 \cdot 8}{2 \cdot 3}

(- 13)^{2} - 4 \cdot 3 \cdot 8 = 73

m_{1, 2} = \frac{- ( - 13 ) \pm 73}{2 \cdot 3}

将解分隔开

m_{1} = \frac{- ( - 13 ) + 73}{2 \cdot 3}, m_{2} = \frac{- ( - 13 ) - 73}{2 \cdot 3}

m = \frac{- ( - 13 ) + 73}{2 \cdot 3} : \frac{13 + 73}{6}

m = \frac{- ( - 13 ) - 73}{2 \cdot 3} : \frac{13 - 73}{6}

二次方程组的解是:

m = \frac{13 + 73}{6}, m = \frac{13 - 73}{6}

作图

流行的例子

2 y^{2} - 5 y + 8 = 0

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2 x^{2} - 3 x + 16 = 0

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