Wow, I can't believe I actually got that all right, excluding the y-coordinate. I don't know why I didn't search for algebra forums before, LOL...
So, The minimum value will be -6.07
Now, this might be a dumb question, but how do I find the two x-coordinates?
no, they are not correct.
learn to use the store capability of the calculator. the "store" button is just above the ON button labeled [STO->] ... type the number first, hit the store button (you get the arrow), then type in the letter of the alphabet where you want it. A, B, and C are good choices since they represent the values in the quadratic formula.
5.71 -> A
-3.135 -> B
-5.64 -> C
now type in on the home screen ...
for one the first root.
{note that the negative sign in front of B is the small negative sign, whereas the minus sign between B^2 and 4AC is the subtraction sign}
press [2nd][ENTER] to recall the last expression, change the + to a - ...
for the second root.
you should get 1.305586355 and -.7565495776
you need to simplify the entire numerator before doing the division. order of operations, remember?
in any case, why are you doing this piece by piece? that's why you are making errors.
use the calculator's full capability to evaluate expressions all at once ... work smart, not hard.
i forgot to do the square root.. heres the new update
i get 11.775 out of the square root.
then i take 3.135 + 11.775 then divide it by 11.42 and get 1.3056 which comes to 1.306
then i take 3.135 - 11.775 then divide by 11.42 and get -.7565 which comes to -.757