In this video, we will multiply radical expressions.
Let’s start with simple expressions.
In other words,
Let’s try other examples:
would equal to
would equal to , which is a perfect square so it would be
Let’s try the same problem by using another method:
would equal to can also be written as
This also leads to the answer of 6
For , it would equal to
25 goes into 675 twenty-seven times
Since 5 is the square root of 25, can be written as
This can be further simplified into
Let’s go over how to multiply radical expressions.
First, let’s start with
So if you look, closely
Keep this in mind as we move forward in the lesson.
Let’s take a look at this
this cannot be simplified.
But what if we reduce this first?
So you can multiply it across and get an answer.
Or reduce it first and multiply it out.
Let’s have this one
I can multiply this out
Then we should break down.
But it’s a pretty large number.
Let’s see what happens if we reduce it first.
We came up with the same answer.
The number of steps in the two methods is pretty much the same.
But I dealt with smaller numbers using the second method.
Let’s look back at a point here.
At this point, we know that can’t be broken down.
But there’s a there.
And we know that goes into .
So, we might as well break it down. So we’ll have
Let’s just reorganize this
And we’ll solve