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受欢迎的代数 >

0=-16t^2+96t+4

解答

0 = - 16 t^{2} + 96 t + 4

解答

t = - \frac{- 6 + 37}{2}, t = \frac{6 + 37}{2}

+1

十进制

t = - 0.04138 \dots, t = 6.04138 \dots

求解步骤

0 = - 16 t^{2} + 96 t + 4

交换两边

- 16 t^{2} + 96 t + 4 = 0

使用求根公式求解

t_{1, 2} = \frac{- 96 \pm 9 6 ^{2} - 4 ( - 16 ) \cdot 4}{2 ( - 16 )}

9 6^{2} - 4 (- 16) \cdot 4 = 1637

t_{1, 2} = \frac{- 96 \pm 16 37}{2 ( - 16 )}

将解分隔开

t_{1} = \frac{- 96 + 16 37}{2 ( - 16 )}, t_{2} = \frac{- 96 - 16 37}{2 ( - 16 )}

t = \frac{- 96 + 16 37}{2 ( - 16 )} : - \frac{- 6 + 37}{2}

t = \frac{- 96 - 16 37}{2 ( - 16 )} : \frac{6 + 37}{2}

二次方程组的解是:

t = - \frac{- 6 + 37}{2}, t = \frac{6 + 37}{2}

作图

流行的例子

36 u = 9 u^{2}

3 x^{2} = 5 x - 3

- x^{2} - 12 = 0

4^{2} + 1 2^{2} = x^{2}

completesquare 64x^2-80x

co m pl e t es q u a re 64 x^{2} - 80 x