3600=x^2-160x+10000

解

3600 = x^{2} - 160 x + 10000

x = 80

解答ステップ

3600 = x^{2} - 160 x + 10000

辺を交換する

x^{2} - 160 x + 10000 = 3600

3600

を左側に移動します

x^{2} - 160 x + 6400 = 0

解くとthe二次式

x_{1, 2} = \frac{- ( - 160 ) \pm ( - 160 ) ^{2} - 4 \cdot 1 \cdot 6400}{2 \cdot 1}

(- 160)^{2} - 4 \cdot 1 \cdot 6400 = 0

x_{1, 2} = \frac{- ( - 160 ) \pm 0}{2 \cdot 1}

x = \frac{- ( - 160 )}{2 \cdot 1}

\frac{- ( - 160 )}{2 \cdot 1} = 80

x = 80

二次equationの解:

x = 80