Analyzing Domain in Rational Equation: 14/x - 6x = 2/(x-5)

Question

Find the area of domain (no need to solve)

14x6x=2x5 \frac{14}{x}-6x=\frac{2}{x-5}

Video Solution

Solution Steps

00:00 Find the domain of substitution
00:03 Domain exists, to ensure we definitely don't divide by 0
00:07 This is one domain, now let's find the second one
00:12 Let's isolate X to find the domain of substitution
00:21 This is the second domain, the domain of substitution is both of them together
00:24 This is the domain of substitution, and this is the solution to the question

Step-by-Step Solution

To find the domain of the given function, we need to determine where the function is undefined due to division by zero. The function in question is:

14x6x=2x5 \frac{14}{x} - 6x = \frac{2}{x-5}

We identify two fractions: 14x \frac{14}{x} and 2x5 \frac{2}{x-5} . Each fraction has a denominator that can potentially cause division by zero:

  • For 14x \frac{14}{x} , the denominator x x shouldn't be zero. Thus, x0 x \neq 0 .
  • For 2x5 \frac{2}{x-5} , the denominator x5 x-5 shouldn't be zero. Thus, x5 x \neq 5 .

By excluding these values from the set of all real numbers, we obtain the domain of the function. Therefore, the domain consists of all real numbers except for x=0 x = 0 and x=5 x = 5 .

Thus, the domain of the function is x0,x5 x \neq 0, x \neq 5 .

Answer

x0,x5 x≠0,x≠5