5a^2-10a=0

解

5 a^{2} - 10 a = 0

a = 2, a = 0

解答ステップ

5 a^{2} - 10 a = 0

解くとthe二次式

a_{1, 2} = \frac{- ( - 10 ) \pm ( - 10 ) ^{2} - 4 \cdot 5 \cdot 0}{2 \cdot 5}

(- 10)^{2} - 4 \cdot 5 \cdot 0 = 10

a_{1, 2} = \frac{- ( - 10 ) \pm 10}{2 \cdot 5}

解を分離する

a_{1} = \frac{- ( - 10 ) + 10}{2 \cdot 5}, a_{2} = \frac{- ( - 10 ) - 10}{2 \cdot 5}

a = \frac{- ( - 10 ) + 10}{2 \cdot 5} : 2

a = \frac{- ( - 10 ) - 10}{2 \cdot 5} : 0

二次equationの解:

a = 2, a = 0