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Let's look at a number...
5...
Because this is my favorite number!
What number can we add
to 5
to get
0
(which is the additive identity)
as the answer?
You should be thinking
about a negative number. In fact, you should be
thinking about a number that is the opposite of
5!
-5!
So, the additive
inverse of
5
is -5!
Let's go the other
way...
What number can we add
to -5
to get
0
as the answer?
What's
the opposite of
-5?
5!
So, the additive
inverse of
-5
is 5!
Here's the official
property:
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The Additive
Inverse
Property:
This is often
written in one line...
Where
a
is any real number and
-a is the opposite of
a. |
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and distribution and/or downloading of these lessons is strictly
prohibited. |
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