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受欢迎的代数 >

m^2+16m=4

解答

m^{2} + 16 m = 4

解答

m = 2 (17 - 4), m = - 2 (4 + 17)

+1

十进制

m = 0.24621 \dots, m = - 16.24621 \dots

求解步骤

m^{2} + 16 m = 4

将

4

para o lado esquerdo

m^{2} + 16 m - 4 = 0

使用求根公式求解

m_{1, 2} = \frac{- 16 \pm 1 6 ^{2} - 4 \cdot 1 \cdot ( - 4 )}{2 \cdot 1}

1 6^{2} - 4 \cdot 1 \cdot (- 4) = 417

m_{1, 2} = \frac{- 16 \pm 4 17}{2 \cdot 1}

将解分隔开

m_{1} = \frac{- 16 + 4 17}{2 \cdot 1}, m_{2} = \frac{- 16 - 4 17}{2 \cdot 1}

m = \frac{- 16 + 4 17}{2 \cdot 1} : 2 (17 - 4)

m = \frac{- 16 - 4 17}{2 \cdot 1} : - 2 (4 + 17)

二次方程组的解是:

m = 2 (17 - 4), m = - 2 (4 + 17)

作图

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solvefor x,4x^2-8kx=0

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