x^2-20x-44=0

解

x^{2} - 20 x - 44 = 0

x = 22, x = - 2

解答ステップ

x^{2} - 20 x - 44 = 0

解くとthe二次式

x_{1, 2} = \frac{- ( - 20 ) \pm ( - 20 ) ^{2} - 4 \cdot 1 \cdot ( - 44 )}{2 \cdot 1}

(- 20)^{2} - 4 \cdot 1 \cdot (- 44) = 24

x_{1, 2} = \frac{- ( - 20 ) \pm 24}{2 \cdot 1}

解を分離する

x_{1} = \frac{- ( - 20 ) + 24}{2 \cdot 1}, x_{2} = \frac{- ( - 20 ) - 24}{2 \cdot 1}

x = \frac{- ( - 20 ) + 24}{2 \cdot 1} : 22

x = \frac{- ( - 20 ) - 24}{2 \cdot 1} : - 2

二次equationの解:

x = 22, x = - 2