quadraticformula 5x^2-11x+2=0

解

quadraticformula

x = 2, x = \frac{1}{5}

十進法表記

x = 2, x = 0.2

解答ステップ

5 x^{2} - 11 x + 2 = 0

解くとthe二次式

x_{1, 2} = \frac{- ( - 11 ) \pm ( - 11 ) ^{2} - 4 \cdot 5 \cdot 2}{2 \cdot 5}

(- 11)^{2} - 4 \cdot 5 \cdot 2 = 9

x_{1, 2} = \frac{- ( - 11 ) \pm 9}{2 \cdot 5}

解を分離する

x_{1} = \frac{- ( - 11 ) + 9}{2 \cdot 5}, x_{2} = \frac{- ( - 11 ) - 9}{2 \cdot 5}

x = \frac{- ( - 11 ) + 9}{2 \cdot 5} : 2

x = \frac{- ( - 11 ) - 9}{2 \cdot 5} : \frac{1}{5}

二次equationの解:

x = 2, x = \frac{1}{5}