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受欢迎的代数 >

4/x-x/8 =0

解答

\frac{4}{x} - \frac{x}{8} = 0

解答

x = 42, x = - 42

+1

十进制

x = 5.65685 \dots, x = - 5.65685 \dots

求解步骤

\frac{4}{x} - \frac{x}{8} = 0

乘以最小公倍数

32 - x^{2} = 0

解

32 - x^{2} = 0 : x = 42, x = - 42

x = 42, x = - 42

验证解

找到无定义的点（奇点）:

x = 0

将不在定义域的点与解相综合:

x = 42, x = - 42

作图

流行的例子

x + 8 = \frac{1}{x - 4}

1/(t+7)-5/(t-5)=1

\frac{1}{t + 7} - \frac{5}{t - 5} = 1

9+3/(x+3)=-x/(x+3)

9 + \frac{3}{x + 3} = - \frac{x}{x + 3}

(b^2+3^1(-3))/b =3

\frac{b ^{2} + 3 ^{1} ( - 3 )}{b} = 3

solvefor r,m=(n-p)/(r-5)

so l v e f or r, m = \frac{n - p}{r - 5}