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受欢迎的代数 >

s^2+4.5s+9.1310625=0

解答

s^{2} + 4.5 s + 9.1310625 = 0

解答

s = - \frac{4.5}{2} + i \frac{16.27425}{2}, s = - \frac{4.5}{2} - i \frac{16.27425}{2}

求解步骤

s^{2} + 4.5 s + 9.1310625 = 0

使用求根公式求解

s_{1, 2} = \frac{- 4.5 \pm 4. 5 ^{2} - 4 \cdot 1 \cdot 9.1310625}{2 \cdot 1}

化简

4. 5^{2} - 4 \cdot 1 \cdot 9.1310625 : 16.27425 i

s_{1, 2} = \frac{- 4.5 \pm 16.27425 i}{2 \cdot 1}

将解分隔开

s_{1} = \frac{- 4.5 + 16.27425 i}{2 \cdot 1}, s_{2} = \frac{- 4.5 - 16.27425 i}{2 \cdot 1}

s = \frac{- 4.5 + 16.27425 i}{2 \cdot 1} : - \frac{4.5}{2} + i \frac{16.27425}{2}

s = \frac{- 4.5 - 16.27425 i}{2 \cdot 1} : - \frac{4.5}{2} - i \frac{16.27425}{2}

二次方程组的解是:

s = - \frac{4.5}{2} + i \frac{16.27425}{2}, s = - \frac{4.5}{2} - i \frac{16.27425}{2}

作图

流行的例子

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36 y^{2} - 81 = 0

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12a^2-4a-13=5a+8

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