Video Transcript
What is the constant term in the
expression four π₯ minus π¦ squared plus 27?
To answer this question, we first
need to recall what we mean by the constant term in an expression. First, a constant is something
whose value does not change. For example, in our expression, we
call π₯ and π¦ variables because they can take on many different values. However, a number like 27 doesnβt
change as our values of π₯ or π¦ change. Itβs always equal to 27.
Next, we also need to remember what
we mean by a term. In this context, when we say a
term, we mean the parts weβre adding together to make our expression. So, four π₯ is a term, negative π¦
squared is a term, and 27 is a term. Alternatively, we can think of each
monomial as a term. We can see that four π₯ is varying
as the value of π₯ changes and π¦ squared is changing as the value of π¦
changes. So, only 27 remains constant. Therefore, the constant term in the
expression four π₯ minus π¦ squared plus 27 is 27.