determine the values of a, b, and c of the following quadratic functions.
write the function first in it's standard form f(x) =ax²+bx+c or y=ax²+bx+c

1.f(x) =-x² 4 - 2
2.f(x) =4x+7-4x²
3.f(x)=(2+3x) (-4 -5)
4.f(x)=5(8-1)²+4

I really need this so please answer it correctly. Thanks​