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受欢迎的代数 >

根 18x^2+476x+2400

解答

根

18 x^{2} + 476 x + 2400

解答

x = \frac{- 119 + 3361}{9}, x = - \frac{119 + 3361}{9}

求解步骤

18 x^{2} + 476 x + 2400

根与 X 轴相交

(y = 0)

18 x^{2} + 476 x + 2400 = 0

使用求根公式求解

x_{1, 2} = \frac{- 476 \pm 47 6 ^{2} - 4 \cdot 18 \cdot 2400}{2 \cdot 18}

47 6^{2} - 4 \cdot 18 \cdot 2400 = 43361

x_{1, 2} = \frac{- 476 \pm 4 3361}{2 \cdot 18}

将解分隔开

x_{1} = \frac{- 476 + 4 3361}{2 \cdot 18}, x_{2} = \frac{- 476 - 4 3361}{2 \cdot 18}

x = \frac{- 476 + 4 3361}{2 \cdot 18} : \frac{- 119 + 3361}{9}

x = \frac{- 476 - 4 3361}{2 \cdot 18} : - \frac{119 + 3361}{9}

二次方程组的解是:

x = \frac{- 119 + 3361}{9}, x = - \frac{119 + 3361}{9}

作图

流行的例子

3 k^{2} + 6 k = 105

roo t s x^{2} + 4 x - 5

3 (3 x + 6)^{2} - 46 = 5

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