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人気のある代数 >

4.9t^2-205.06t-210=0

解

4.9 t^{2} - 205.06 t - 210 = 0

解

t = \frac{20506 + 461656036}{980}, t = \frac{20506 - 461656036}{980}

+1

十進法表記

t = 42.84916 \dots, t = - 1.00018 \dots

解答ステップ

4.9 t^{2} - 205.06 t - 210 = 0

以下で両辺を乗じる:

100

490 t^{2} - 20506 t - 21000 = 0

解くとthe二次式

t_{1, 2} = \frac{- ( - 20506 ) \pm ( - 20506 ) ^{2} - 4 \cdot 490 ( - 21000 )}{2 \cdot 490}

(- 20506)^{2} - 4 \cdot 490 (- 21000) = 461656036

t_{1, 2} = \frac{- ( - 20506 ) \pm 461656036}{2 \cdot 490}

解を分離する

t_{1} = \frac{- ( - 20506 ) + 461656036}{2 \cdot 490}, t_{2} = \frac{- ( - 20506 ) - 461656036}{2 \cdot 490}

t = \frac{- ( - 20506 ) + 461656036}{2 \cdot 490} : \frac{20506 + 461656036}{980}

t = \frac{- ( - 20506 ) - 461656036}{2 \cdot 490} : \frac{20506 - 461656036}{980}

二次equationの解:

t = \frac{20506 + 461656036}{980}, t = \frac{20506 - 461656036}{980}

グラフ

人気の例

3y^2-20y+9=-y^2+8y-40

3 y^{2} - 20 y + 9 = - y^{2} + 8 y - 40

5 u (u + 2) + 5 = 0

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(a x + b)^{2} - (b x + a)^{2} = 0

28x^2-21x=20x-15

28 x^{2} - 21 x = 20 x - 15

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