v^2-7v=0

解

v^{2} - 7 v = 0

v = 7, v = 0

解答ステップ

v^{2} - 7 v = 0

解くとthe二次式

v_{1, 2} = \frac{- ( - 7 ) \pm ( - 7 ) ^{2} - 4 \cdot 1 \cdot 0}{2 \cdot 1}

(- 7)^{2} - 4 \cdot 1 \cdot 0 = 7

v_{1, 2} = \frac{- ( - 7 ) \pm 7}{2 \cdot 1}

解を分離する

v_{1} = \frac{- ( - 7 ) + 7}{2 \cdot 1}, v_{2} = \frac{- ( - 7 ) - 7}{2 \cdot 1}

v = \frac{- ( - 7 ) + 7}{2 \cdot 1} : 7

v = \frac{- ( - 7 ) - 7}{2 \cdot 1} : 0

二次equationの解:

v = 7, v = 0