00:01
So let's look at the equation, 6x squared equals 2x plus 1.
00:06
We're going to solve this using the quadratic formula, which is x equals minus b, plus or minus the square root of b squared minus 4a, all over 2a.
00:14
So this equation is not quite ready.
00:16
It needs to say equal 0.
00:17
So we're going to subtract 2x and subtract 1.
00:20
So we're going to end up with 6x squared minus 2x minus 1 equals 0.
00:26
And now we can use the quadratic formula.
00:27
A is a coefficient of x squared, which is 6.
00:30
B is a coefficient of x, which is negative 2, and c is the constant negative 1.
00:35
Let's go ahead and put this into the water formula.
00:38
So, x equals minus negative 2 plus or minus the square root of negative 2 squared, minus 4 times 6 times negative 1 over 2a.
00:48
Oops.
00:49
Instead of a, i can write 6, 2 times 6...