00:01
Here we are given an expression 3x plus 7x squared.
00:06
And the question is basically asking, why can't these combine together? why can't these variable terms combine together? and the answer to this is because, yes, you have the same variable, but that variable has a different degree in each term.
00:28
And so this term here, 3x, the degree of the x, which is the exponent, is 1, whereas my term 7x squared has a degree of 2.
00:42
And so if you're going to combine these terms, for them to be what's called like terms, they have to have the same degree.
00:55
And so if i have, let's go to another example, 3x plus 7x cubed.
01:03
Now pause the video for a second and think.
01:07
Can these combine? and the answer here is that they cannot...