A parabola has x-axis values of -3 and 5. And it symmetry axis is: x = 1
The a value is negative, but i cannot say what its exact value is.
It says to prove that
Here's what i did:
And now i KNOW that must be equal to but i have no idea how to prove it
Please help guys.
EDIT: Sorry, i forgot to mention that there is also a graph