00:01
Hello, hope you're doing well.
00:03
So to solve this equation, we're going to use the quadratic formula.
00:07
The x is equal to minus b plus or minus the square root, b squared, minus 4a, all over 2a.
00:16
In this equation, a is equal to 1, b is equal to minus 8, and c is equal to 15.
00:23
Is going to be equal to minus, minus, minus 8, plus or minus the square root of minus 8 squared, minus 4 times 1, times 15, all over 2 times 1.
00:41
And this is equal to minus minus 8, that's 8, plus or minus the square root, minus 8 squared, that's 64, 4 times 1 times 15 is 60, so 60 minus 64 is 4, over 2 times 1 is 2.
00:56
Squared 4 is 2, so it's going to be 8 plus or minus 2 over 2.
01:01
All right, so first going with our minus option, using the minus of this plus or minus...