This lesson is about finding the implied domain of a rational function with a radical. To determine the domain of a graph, we look for values that are not allowed, such as dividing by zero or taking the square root of a negative number. By setting the bottom equal to zero and setting the root greater than or equal to zero, we can solve for the values that are not part of the domain. In this case, the domain is all values greater than negative six, as x cannot equal negative six or any other value that makes the bottom equal to zero.
Finding the implied domain of a rational function with a radical
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