00:01
So if we have negative x times x minus y times y times y times y.
00:11
How could we rewrite this using exponents? well, let's handle the variables separately, right? we've got x's and we've got y's.
00:22
So let's start with the x's.
00:24
Negative x times x.
00:29
To remember that this negative sign is here, and let's just handle the x's for right now what's our base? so what's being multiplied by itself is x and our exponent.
00:49
How many times are we multiplying x by itself? how many xs do we have here? that's 2.
00:56
And we write this as our base x to the power of our exponent.
01:02
2.
01:02
X to the second power, that's x squared.
01:05
Now we'll remember this negative sign here, right? so negative x times x equals negative x squared.
01:11
So that's the x's.
01:16
Let's look at the y's.
01:18
We have y times y times y.
01:23
So our base, what's being multiplied by itself, is y, and our exponent.
01:33
How many ys are we multiplying together here? that's three, right? one, two, three...