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受欢迎的代数 >

216t^2-42.6t+80.84=9607

解答

216 t^{2} - 42.6 t + 80.84 = 9607

解答

t = \frac{4260 + 82324170000}{43200}, t = \frac{4260 - 82324170000}{43200}

+1

十进制

t = 6.74032 \dots, t = - 6.54309 \dots

求解步骤

216 t^{2} - 42.6 t + 80.84 = 9607

在两边乘以

100

21600 t^{2} - 4260 t + 8084 = 960700

将

960700

para o lado esquerdo

21600 t^{2} - 4260 t - 952616 = 0

使用求根公式求解

t_{1, 2} = \frac{- ( - 4260 ) \pm ( - 4260 ) ^{2} - 4 \cdot 21600 ( - 952616 )}{2 \cdot 21600}

(- 4260)^{2} - 4 \cdot 21600 (- 952616) = 82324170000

t_{1, 2} = \frac{- ( - 4260 ) \pm 82324170000}{2 \cdot 21600}

将解分隔开

t_{1} = \frac{- ( - 4260 ) + 82324170000}{2 \cdot 21600}, t_{2} = \frac{- ( - 4260 ) - 82324170000}{2 \cdot 21600}

t = \frac{- ( - 4260 ) + 82324170000}{2 \cdot 21600} : \frac{4260 + 82324170000}{43200}

t = \frac{- ( - 4260 ) - 82324170000}{2 \cdot 21600} : \frac{4260 - 82324170000}{43200}

二次方程组的解是:

t = \frac{4260 + 82324170000}{43200}, t = \frac{4260 - 82324170000}{43200}

作图

流行的例子

x^{2} + 6 x = 520

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