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人気のある代数 >

s^2+8s+8=0

解

s^{2} + 8 s + 8 = 0

解

s = 2 (2 - 2), s = - 2 (2 + 2)

+1

十進法表記

s = - 1.17157 \dots, s = - 6.82842 \dots

解答ステップ

s^{2} + 8 s + 8 = 0

解くとthe二次式

s_{1, 2} = \frac{- 8 \pm 8 ^{2} - 4 \cdot 1 \cdot 8}{2 \cdot 1}

8^{2} - 4 \cdot 1 \cdot 8 = 42

s_{1, 2} = \frac{- 8 \pm 4 2}{2 \cdot 1}

解を分離する

s_{1} = \frac{- 8 + 4 2}{2 \cdot 1}, s_{2} = \frac{- 8 - 4 2}{2 \cdot 1}

s = \frac{- 8 + 4 2}{2 \cdot 1} : 2 (2 - 2)

s = \frac{- 8 - 4 2}{2 \cdot 1} : - 2 (2 + 2)

二次equationの解:

s = 2 (2 - 2), s = - 2 (2 + 2)

グラフ

人気の例

15 x^{2} + 34 x - 77 = 0

3x^1+6x^2=9,-2x^1+3x^2=4

3 x^{1} + 6 x^{2} = 9, - 2 x^{1} + 3 x^{2} = 4

(x^2-x)/2-((x-4)^2)/3 =0

\frac{x ^{2} - x}{2} - \frac{( x - 4 ) ^{2}}{3} = 0

-0.45x^2+5.52x-13.7=0

- 0.45 x^{2} + 5.52 x - 13.7 = 0

solvefor x,z=4(x-y)-x^2-y^2

so l v e f or x, z = 4 (x - y) - x^{2} - y^{2}