a^2-11a=0

解

a^{2} - 11 a = 0

a = 11, a = 0

解答ステップ

a^{2} - 11 a = 0

解くとthe二次式

a_{1, 2} = \frac{- ( - 11 ) \pm ( - 11 ) ^{2} - 4 \cdot 1 \cdot 0}{2 \cdot 1}

(- 11)^{2} - 4 \cdot 1 \cdot 0 = 11

a_{1, 2} = \frac{- ( - 11 ) \pm 11}{2 \cdot 1}

解を分離する

a_{1} = \frac{- ( - 11 ) + 11}{2 \cdot 1}, a_{2} = \frac{- ( - 11 ) - 11}{2 \cdot 1}

a = \frac{- ( - 11 ) + 11}{2 \cdot 1} : 11

a = \frac{- ( - 11 ) - 11}{2 \cdot 1} : 0

二次equationの解:

a = 11, a = 0