Maths-
General
Easy
Question
If the denominator of a rational expression is 
what values must be restricted from the domain for x ?
Hint:
The expansion of 
. We have to state the domain of a rational expression while simplifying them because we must exclude zeros of a denominator as dividing with zero is not defined.
We are asked to find the values that have to be restricted for the domain of a expression containing the given expression as the denominator.
The correct answer is: Thus, the values to be excluded from the domain are 0, 2 straight & minus 5
Step 1 of 2:
Given denominator of an expression is
.
Simplifying it, we have:
Step 2 of 2:
Here, the denominator attains a zero value when 
. That is;
.
Thus, the values to be excluded from the domain are 0, 
.
We have to state the domain of a rational expression while simplifying them because we must exclude zeros of a denominator as dividing with zero is not defined.
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