z^2-8z=0

解

z^{2} - 8 z = 0

z = 8, z = 0

解答ステップ

z^{2} - 8 z = 0

解くとthe二次式

z_{1, 2} = \frac{- ( - 8 ) \pm ( - 8 ) ^{2} - 4 \cdot 1 \cdot 0}{2 \cdot 1}

(- 8)^{2} - 4 \cdot 1 \cdot 0 = 8

z_{1, 2} = \frac{- ( - 8 ) \pm 8}{2 \cdot 1}

解を分離する

z_{1} = \frac{- ( - 8 ) + 8}{2 \cdot 1}, z_{2} = \frac{- ( - 8 ) - 8}{2 \cdot 1}

z = \frac{- ( - 8 ) + 8}{2 \cdot 1} : 8

z = \frac{- ( - 8 ) - 8}{2 \cdot 1} : 0

二次equationの解:

z = 8, z = 0