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人気のある代数 >

2808.8=0.682.14100x(9.5-0.4*x)

解

2808.8 = 0.68 \cdot 2.14 \cdot 100 \cdot x \cdot (9.5 - 0.4 \cdot x)

解

x = \frac{1382.44 - 1257161.832}{116.416}, x = \frac{1382.44 + 1257161.832}{116.416}

+1

十進法表記

x = 2.24374 \dots, x = 21.50625 \dots

解答ステップ

2808.8 = 0.68 \cdot 2.14 \cdot 100 x (9.5 - 0.4 x)

拡張

0.68 \cdot 2.14 \cdot 100 x (9.5 - 0.4 x) : 1382.44 x - 58.208 x^{2}

2808.8 = 1382.44 x - 58.208 x^{2}

辺を交換する

1382.44 x - 58.208 x^{2} = 2808.8

2808.8

を左側に移動します

1382.44 x - 58.208 x^{2} - 2808.8 = 0

標準的な形式で書く

a x^{2} + b x + c = 0

- 58.208 x^{2} + 1382.44 x - 2808.8 = 0

解くとthe二次式

x_{1, 2} = \frac{- 1382.44 \pm 1382.4 4 ^{2} - 4 ( - 58.208 ) ( - 2808.8 )}{2 ( - 58.208 )}

1382.4 4^{2} - 4 (- 58.208) (- 2808.8) = 1257161.832

x_{1, 2} = \frac{- 1382.44 \pm 1257161.832}{2 ( - 58.208 )}

解を分離する

x_{1} = \frac{- 1382.44 + 1257161.832}{2 ( - 58.208 )}, x_{2} = \frac{- 1382.44 - 1257161.832}{2 ( - 58.208 )}

x = \frac{- 1382.44 + 1257161.832}{2 ( - 58.208 )} : \frac{1382.44 - 1257161.832}{116.416}

x = \frac{- 1382.44 - 1257161.832}{2 ( - 58.208 )} : \frac{1382.44 + 1257161.832}{116.416}

二次equationの解:

x = \frac{1382.44 - 1257161.832}{116.416}, x = \frac{1382.44 + 1257161.832}{116.416}

グラフ

人気の例

2x^2-2x+3=x^2-3x+2

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solvefor x,2x^2+2xy+y^2=2

so l v e f or x, 2 x^{2} + 2 x y + y^{2} = 2

quadraticformula x^2-4x+0=0

q u a d r a t i c f or m u l a x^{2} - 4 x + 0 = 0

solvefor x,x^2-3x-28=0

so l v e f or x, x^{2} - 3 x - 28 = 0

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