Percentage
A percentage is a number indicated as a fraction of 100. It is a dimensionless number often expressed using the symbol %.
Algebraic Expressions
In mathematics, an algebraic expression consists of constant(s), variable(s), and mathematical operators. It is made up of terms.
Numbers
Numbers are some measures used for counting. They can be compared one with another to know its position in the number line and determine which one is greater or lesser than the other.
Subtraction
Before we begin to understand the subtraction of algebraic expressions, we need to list out a few things that form the basis of algebra.
Addition
Before we begin to understand the addition of algebraic expressions, we need to list out a few things that form the basis of algebra.
![**True or False: If False, explain**
The domain of the algebraic expression
\[
\frac{x^2 - 1}{(x-5)(x-3)}
\]
consists of all real numbers except 3 and 5.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fc8c67bb7-eb6b-432f-939c-435cb842e1bf%2F10667652-d93f-4999-b769-a5f67dfb9258%2Fgfpa5zi.jpeg&w=3840&q=75)
Given expression is
A function is defined if denominator is not equal to zero.
And a function is defined if .
But as square root function is in denominator, so we will use only greater than sign as denominator can't be zero.
Therefore, the given expression is defined if:
And
From equation (1) and (2),
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