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人気のある代数 >

-4.9t^2-6t+4.5=0

解

- 4.9 t^{2} - 6 t + 4.5 = 0

解

t = - \frac{3 ( 10 + 345 )}{49}, t = \frac{3 ( 345 - 10 )}{49}

+1

十進法表記

t = - 1.74943 \dots, t = 0.52494 \dots

解答ステップ

- 4.9 t^{2} - 6 t + 4.5 = 0

以下で両辺を乗じる:

10

- 49 t^{2} - 60 t + 45 = 0

解くとthe二次式

t_{1, 2} = \frac{- ( - 60 ) \pm ( - 60 ) ^{2} - 4 ( - 49 ) \cdot 45}{2 ( - 49 )}

(- 60)^{2} - 4 (- 49) \cdot 45 = 6345

t_{1, 2} = \frac{- ( - 60 ) \pm 6 345}{2 ( - 49 )}

解を分離する

t_{1} = \frac{- ( - 60 ) + 6 345}{2 ( - 49 )}, t_{2} = \frac{- ( - 60 ) - 6 345}{2 ( - 49 )}

t = \frac{- ( - 60 ) + 6 345}{2 ( - 49 )} : - \frac{3 ( 10 + 345 )}{49}

t = \frac{- ( - 60 ) - 6 345}{2 ( - 49 )} : \frac{3 ( 345 - 10 )}{49}

二次equationの解:

t = - \frac{3 ( 10 + 345 )}{49}, t = \frac{3 ( 345 - 10 )}{49}

グラフ

人気の例

(x-3)/3-(3(x-2))/2 =(x-3-(x+2))/2

\frac{x - 3}{3} - \frac{3 ( x - 2 )}{2} = \frac{x - 3 - ( x + 2 )}{2}

8 y = 4

簡約 (1/(x+h)-1/x)/h

s im pl i f y \frac{\frac{1}{x + h} - \frac{1}{x}}{h}

因数 x^2+7x-ax-7a

f a c t or x^{2} + 7 x - a x - 7 a

x (x + 1) > 6