00:01
So given this equation, what type of equation is it? well, first let's just try to simplify this, right? negative 3x minus 5x.
00:08
This is going to be negative 8x, right? combined like terms equals 6.
00:12
And then 4 minus 9, this is going to be 2x minus 5.
00:16
Okay.
00:17
So is this an identity? identity means in an equation maybe x plus 0 equals x.
00:25
Maybe x equals x.
00:28
It's equal on both sides.
00:29
So it's not an identity.
00:31
This isn't always true.
00:33
Conditional equation.
00:35
What is a conditional equation? so an identity is just always going to be true.
00:39
Could also be 2x plus 2.
00:41
If i were distributed that 2x plus 4.
00:43
Another way to think about it, it's true for all x values.
00:47
What's a conditional equation? maybe it's true for some x values, but not all...