00:01
All right, so we're going to solve the following quadratic equation.
00:04
Now, although it doesn't look like it, it is in the form a xx4 plus bx plus c equals zero.
00:10
It's just bx and c are in a different order.
00:14
If it makes it easier for you, you can relate it in descending order of degree.
00:23
Just so you don't mess up what a, b, and c are.
00:26
So a is 0 .6, b is negative 0 .4, and c is 0 .4, and c is 0 .4.
00:33
0 .03.
00:35
So now we can go and throw it in the quadratic equation, which is negative b, plus or minus the square root of b squared, minus 4, 8c, all about it by 2a.
00:46
So i'd have x is equal to negative, negative, negative 0 .4, plus or minus the square root, negative 0 .4 squared, minus 4 times 0 .6, 0 .3.
01:04
All divided by 2 times 0 .6.
01:09
But this one i'm going to take what is under my square root and throw that into my calculator.
01:14
So i have bracket 0 .4 negative bracket squared minus 4 times 0 .6 times 0 .03...