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人気のある代数 >

7m^2-2m=10

解

7 m^{2} - 2 m = 10

解

m = \frac{1 + 71}{7}, m = \frac{1 - 71}{7}

+1

十進法表記

m = 1.34659 \dots, m = - 1.06087 \dots

解答ステップ

7 m^{2} - 2 m = 10

10

を左側に移動します

7 m^{2} - 2 m - 10 = 0

解くとthe二次式

m_{1, 2} = \frac{- ( - 2 ) \pm ( - 2 ) ^{2} - 4 \cdot 7 ( - 10 )}{2 \cdot 7}

(- 2)^{2} - 4 \cdot 7 (- 10) = 271

m_{1, 2} = \frac{- ( - 2 ) \pm 2 71}{2 \cdot 7}

解を分離する

m_{1} = \frac{- ( - 2 ) + 2 71}{2 \cdot 7}, m_{2} = \frac{- ( - 2 ) - 2 71}{2 \cdot 7}

m = \frac{- ( - 2 ) + 2 71}{2 \cdot 7} : \frac{1 + 71}{7}

m = \frac{- ( - 2 ) - 2 71}{2 \cdot 7} : \frac{1 - 71}{7}

二次equationの解:

m = \frac{1 + 71}{7}, m = \frac{1 - 71}{7}

グラフ

人気の例

4 x - 12 \geq 8

z^{2} + 4 z - 5 = 0

簡約 (2^{-3})^2

s im pl i f y (2^{- 3})^{2}

(2x-8)/(x+1)<= 1

\frac{2 x - 8}{x + 1} \leq 1

- 19 + 8 x = 32 + 5 x