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人気のある代数 >

x^2+0.9x-0.36=0

解

x^{2} + 0.9 x - 0.36 = 0

解

x = \frac{3}{10}, x = - \frac{6}{5}

+1

十進法表記

x = 0.3, x = - 1.2

解答ステップ

x^{2} + 0.9 x - 0.36 = 0

以下で両辺を乗じる:

100

100 x^{2} + 90 x - 36 = 0

解くとthe二次式

x_{1, 2} = \frac{- 90 \pm 9 0 ^{2} - 4 \cdot 100 ( - 36 )}{2 \cdot 100}

9 0^{2} - 4 \cdot 100 (- 36) = 150

x_{1, 2} = \frac{- 90 \pm 150}{2 \cdot 100}

解を分離する

x_{1} = \frac{- 90 + 150}{2 \cdot 100}, x_{2} = \frac{- 90 - 150}{2 \cdot 100}

x = \frac{- 90 + 150}{2 \cdot 100} : \frac{3}{10}

x = \frac{- 90 - 150}{2 \cdot 100} : - \frac{6}{5}

二次equationの解:

x = \frac{3}{10}, x = - \frac{6}{5}

グラフ

人気の例

solvefor x,z(x+y)p+z(x-y)q=x^2+y^2

so l v e f or x, z (x + y) p + z (x - y) q = x^{2} + y^{2}

(1/2)a(a-18)=2480

(\frac{1}{2}) a (a - 18) = 2480

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