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人気のある代数 >

-4.9t^2+13t+18=0

解

- 4.9 t^{2} + 13 t + 18 = 0

解

t = - \frac{- 65 + 13045}{49}, t = \frac{65 + 13045}{49}

+1

十進法表記

t = - 1.00438 \dots, t = 3.65744 \dots

解答ステップ

- 4.9 t^{2} + 13 t + 18 = 0

以下で両辺を乗じる:

10

- 49 t^{2} + 130 t + 180 = 0

解くとthe二次式

t_{1, 2} = \frac{- 130 \pm 13 0 ^{2} - 4 ( - 49 ) \cdot 180}{2 ( - 49 )}

13 0^{2} - 4 (- 49) \cdot 180 = 213045

t_{1, 2} = \frac{- 130 \pm 2 13045}{2 ( - 49 )}

解を分離する

t_{1} = \frac{- 130 + 2 13045}{2 ( - 49 )}, t_{2} = \frac{- 130 - 2 13045}{2 ( - 49 )}

t = \frac{- 130 + 2 13045}{2 ( - 49 )} : - \frac{- 65 + 13045}{49}

t = \frac{- 130 - 2 13045}{2 ( - 49 )} : \frac{65 + 13045}{49}

二次equationの解:

t = - \frac{- 65 + 13045}{49}, t = \frac{65 + 13045}{49}

グラフ

人気の例

25 x^{2} + 1 = 20 x

\frac{1}{2} c^{2} + 3 c = 1

t^{2} - t + 6 = 0

completesquare x^2+2x-9=0

co m pl e t es q u a re x^{2} + 2 x - 9 = 0

solvefor x,-493+46x-x^2=0

so l v e f or x, - 493 + 46 x - x^{2} = 0