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人気のある代数 >

-0.45x^2+5.52x-13.7=0

解

- 0.45 x^{2} + 5.52 x - 13.7 = 0

解

x = \frac{92 - 1614}{15}, x = \frac{92 + 1614}{15}

+1

十進法表記

x = 3.45502 \dots, x = 8.81164 \dots

解答ステップ

- 0.45 x^{2} + 5.52 x - 13.7 = 0

以下で両辺を乗じる:

100

- 45 x^{2} + 552 x - 1370 = 0

解くとthe二次式

x_{1, 2} = \frac{- 552 \pm 55 2 ^{2} - 4 ( - 45 ) ( - 1370 )}{2 ( - 45 )}

55 2^{2} - 4 (- 45) (- 1370) = 61614

x_{1, 2} = \frac{- 552 \pm 6 1614}{2 ( - 45 )}

解を分離する

x_{1} = \frac{- 552 + 6 1614}{2 ( - 45 )}, x_{2} = \frac{- 552 - 6 1614}{2 ( - 45 )}

x = \frac{- 552 + 6 1614}{2 ( - 45 )} : \frac{92 - 1614}{15}

x = \frac{- 552 - 6 1614}{2 ( - 45 )} : \frac{92 + 1614}{15}

二次equationの解:

x = \frac{92 - 1614}{15}, x = \frac{92 + 1614}{15}

グラフ

人気の例

solvefor x,z=4(x-y)-x^2-y^2

so l v e f or x, z = 4 (x - y) - x^{2} - y^{2}

20 x^{2} - 27 x - 14 = 0

4 y^{2} + 20 y = 0

x^2+8.9x+18.7=0

x^{2} + 8.9 x + 18.7 = 0

- 14 x + 21 - 7 x^{2} = 0