x^2-24x+80=0

解

x^{2} - 24 x + 80 = 0

x = 20, x = 4

解答ステップ

x^{2} - 24 x + 80 = 0

解くとthe二次式

x_{1, 2} = \frac{- ( - 24 ) \pm ( - 24 ) ^{2} - 4 \cdot 1 \cdot 80}{2 \cdot 1}

(- 24)^{2} - 4 \cdot 1 \cdot 80 = 16

x_{1, 2} = \frac{- ( - 24 ) \pm 16}{2 \cdot 1}

解を分離する

x_{1} = \frac{- ( - 24 ) + 16}{2 \cdot 1}, x_{2} = \frac{- ( - 24 ) - 16}{2 \cdot 1}

x = \frac{- ( - 24 ) + 16}{2 \cdot 1} : 20

x = \frac{- ( - 24 ) - 16}{2 \cdot 1} : 4

二次equationの解:

x = 20, x = 4