One of the things we learned this week in Precalc 11 is solving quadratic equations using the quadratic formula where because you don’t want to divide the whole thing by 0. This is probably one of the easiest ways to solve a quadratic equation in my opinion.
Ex.
We know that a=1, b=-1, c=-6 so all we have to do is put those numbers in the formula.
minus -1 is equal to 1, -1 squared is 1, 1 times -6 is -6 times -4 is 24, and 2 times 1 is 2.
1 plus 24 is 25.
square root of 25 is 5
we end up with which is -4 or 6, divided by 2 so we get
x=-2 or x=3