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受欢迎的代数 >

0=6t^2-30t+24

解答

0 = 6 t^{2} - 30 t + 24

解答

t = 4, t = 1

求解步骤

0 = 6 t^{2} - 30 t + 24

交换两边

6 t^{2} - 30 t + 24 = 0

使用求根公式求解

t_{1, 2} = \frac{- ( - 30 ) \pm ( - 30 ) ^{2} - 4 \cdot 6 \cdot 24}{2 \cdot 6}

(- 30)^{2} - 4 \cdot 6 \cdot 24 = 18

t_{1, 2} = \frac{- ( - 30 ) \pm 18}{2 \cdot 6}

将解分隔开

t_{1} = \frac{- ( - 30 ) + 18}{2 \cdot 6}, t_{2} = \frac{- ( - 30 ) - 18}{2 \cdot 6}

t = \frac{- ( - 30 ) + 18}{2 \cdot 6} : 4

t = \frac{- ( - 30 ) - 18}{2 \cdot 6} : 1

二次方程组的解是:

t = 4, t = 1

作图

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