31w^2-40w+16=6w^2

解

31 w^{2} - 40 w + 16 = 6 w^{2}

w = \frac{4}{5}

十進法表記

w = 0.8

解答ステップ

31 w^{2} - 40 w + 16 = 6 w^{2}

6 w^{2}

を左側に移動します

25 w^{2} - 40 w + 16 = 0

解くとthe二次式

w_{1, 2} = \frac{- ( - 40 ) \pm ( - 40 ) ^{2} - 4 \cdot 25 \cdot 16}{2 \cdot 25}

(- 40)^{2} - 4 \cdot 25 \cdot 16 = 0

w_{1, 2} = \frac{- ( - 40 ) \pm 0}{2 \cdot 25}

w = \frac{- ( - 40 )}{2 \cdot 25}

\frac{- ( - 40 )}{2 \cdot 25} = \frac{4}{5}

w = \frac{4}{5}

二次equationの解:

w = \frac{4}{5}