00:01
Okay, i have 5v squared plus 13b equals 6, and i want to get v by itself.
00:05
Well, this is a quadratic equation.
00:07
So first thing i'm going to do is i'm going to subtract 6 from both sides.
00:12
It's at the quadratic equation equal to 0.
00:17
And then from here, i'm going to try to factor this.
00:20
So what i'm going to do to try to factor this, i'm going to try and find two factors.
00:25
So i'm going to put my first term.
00:27
I'm going to use the area model, my first term and my constant term in the box, and then on my x, i'm going to multiply these two terms together.
00:34
So negative 30v squared, and then my middle term will go on the bottom.
00:39
And what i'm looking for here is what two numbers multiply to negative 30, but add to 13.
00:46
And i could list some multiples of 30.
00:48
So 1 and 30, that won't add to 13, 2 and 15.
00:53
That'll subtract to 13...