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人気のある代数 >

8x^2-6x^2=54

解

8 x^{2} - 6 x^{2} = 54

解

x = 33, x = - 33

+1

十進法表記

x = 5.19615 \dots, x = - 5.19615 \dots

解答ステップ

8 x^{2} - 6 x^{2} = 54

類似した元を足す:

8 x^{2} - 6 x^{2} = 2 x^{2}

2 x^{2} = 54

以下で両辺を割る

2

x^{2} = 27

x^{2} = f (a)

の場合, 解は

x = f (a), - f (a)

x = 27, x = - 27

27 = 33

- 27 = - 33

x = 33, x = - 33

グラフ

人気の例

2(x^2+7)=x^2+10

2 (x^{2} + 7) = x^{2} + 10

solvefor x,(y+3)/2 x^2-(y+2)x+(y+1)/2 =0

so l v e f or x, \frac{y + 3}{2} x^{2} - (y + 2) x + \frac{y + 1}{2} = 0

1-1/6 x-1/3 x^2=0

1 - \frac{1}{6} x - \frac{1}{3} x^{2} = 0

- 3 x^{2} + 14 x - 12 = 0

solvefor d,(3(x-5))/(x-4)=undefined

so l v e f or d, \frac{3 ( x - 5 )}{x - 4} = u n d e f in e d