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受欢迎的代数 >

26t^2-355t+300=0

解答

26 t^{2} - 355 t + 300 = 0

解答

t = \frac{355 + 5 3793}{52}, t = \frac{355 - 5 3793}{52}

+1

十进制

t = 12.74878 \dots, t = 0.90506 \dots

求解步骤

26 t^{2} - 355 t + 300 = 0

使用求根公式求解

t_{1, 2} = \frac{- ( - 355 ) \pm ( - 355 ) ^{2} - 4 \cdot 26 \cdot 300}{2 \cdot 26}

(- 355)^{2} - 4 \cdot 26 \cdot 300 = 53793

t_{1, 2} = \frac{- ( - 355 ) \pm 5 3793}{2 \cdot 26}

将解分隔开

t_{1} = \frac{- ( - 355 ) + 5 3793}{2 \cdot 26}, t_{2} = \frac{- ( - 355 ) - 5 3793}{2 \cdot 26}

t = \frac{- ( - 355 ) + 5 3793}{2 \cdot 26} : \frac{355 + 5 3793}{52}

t = \frac{- ( - 355 ) - 5 3793}{2 \cdot 26} : \frac{355 - 5 3793}{52}

二次方程组的解是:

t = \frac{355 + 5 3793}{52}, t = \frac{355 - 5 3793}{52}

作图

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