I was giving an example that completely lost me.
The quadratic function is: 2x^2 - 5x - 12
Let y = 0, factor, and solve.
0= (2x + 3)(x - 4)
x = -3/2 or x = 4
The mid value is:
x = -3/2 + 4
________
2
= -3/2 + 8/2
_________
2
= 5/2/2
= 5/2 x 1/2
= 5/4
Im completely confused at the step where the 4 became 8/2, and the steps beyond, any help?
You have -3/2 + 8/2 = 5/2 and that gets divided by 2.
I suggest you extensively review fractions in order to get much better with them - if you are to have any hope of understanding what you will be required to do in your mathematical studies. It is simply not good enough to say "I'm just bad with fractions".