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人気のある代数 >

-2x^2+5x+12=0

解

- 2 x^{2} + 5 x + 12 = 0

解

x = - \frac{3}{2}, x = 4

+1

十進法表記

x = - 1.5, x = 4

解答ステップ

- 2 x^{2} + 5 x + 12 = 0

解くとthe二次式

x_{1, 2} = \frac{- 5 \pm 5 ^{2} - 4 ( - 2 ) \cdot 12}{2 ( - 2 )}

5^{2} - 4 (- 2) \cdot 12 = 11

x_{1, 2} = \frac{- 5 \pm 11}{2 ( - 2 )}

解を分離する

x_{1} = \frac{- 5 + 11}{2 ( - 2 )}, x_{2} = \frac{- 5 - 11}{2 ( - 2 )}

x = \frac{- 5 + 11}{2 ( - 2 )} : - \frac{3}{2}

x = \frac{- 5 - 11}{2 ( - 2 )} : 4

二次equationの解:

x = - \frac{3}{2}, x = 4

グラフ

人気の例

1/2 (c-2)+1/4 (2c+1)= 5/4

\frac{1}{2} (c - 2) + \frac{1}{4} (2 c + 1) = \frac{5}{4}

因数-x^2+2xy-y^2

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

因数 16x^4-y^4

f a c t or 16 x^{4} - y^{4}

4/5 x+6/5 =-2/5

\frac{4}{5} x + \frac{6}{5} = - \frac{2}{5}

\frac{- 4}{3} = \frac{x}{6}