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受欢迎的代数 >

0.000006x^2-0.02x+25=60-0.025x

解答

0.000006 x^{2} - 0.02 x + 25 = 60 - 0.025 x

解答

x = \frac{- 0.005 + 0.000865}{0.000012}, x = \frac{- 0.005 - 0.000865}{0.000012}

+1

十进制

x = 2034.24019 \dots, x = - 2867.57352 \dots

求解步骤

0.000006 x^{2} - 0.02 x + 25 = 60 - 0.025 x

将

0.025 x

para o lado esquerdo

0.000006 x^{2} + 0.005 x + 25 = 60

将

60

para o lado esquerdo

0.000006 x^{2} + 0.005 x - 35 = 0

使用求根公式求解

x_{1, 2} = \frac{- 0.005 \pm 0.00 5 ^{2} - 4 \cdot 0.000006 ( - 35 )}{2 \cdot 0.000006}

0.00 5^{2} - 4 \cdot 0.000006 (- 35) = 0.000865

x_{1, 2} = \frac{- 0.005 \pm 0.000865}{2 \cdot 0.000006}

将解分隔开

x_{1} = \frac{- 0.005 + 0.000865}{2 \cdot 0.000006}, x_{2} = \frac{- 0.005 - 0.000865}{2 \cdot 0.000006}

x = \frac{- 0.005 + 0.000865}{2 \cdot 0.000006} : \frac{- 0.005 + 0.000865}{0.000012}

x = \frac{- 0.005 - 0.000865}{2 \cdot 0.000006} : \frac{- 0.005 - 0.000865}{0.000012}

二次方程组的解是:

x = \frac{- 0.005 + 0.000865}{0.000012}, x = \frac{- 0.005 - 0.000865}{0.000012}

作图

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