NEED HELP ASAP!!!

[cyndi88]

i need to find the values of a and b so that f is continuous at x=2.
the equation is -x2(squared)+ax+b= 15

 

[stapel]

There is no "f(x)" in "-x² + ax + b = 15". Are you making f continuous, or finding solutions for the equation? If the former, what is "f"?

Thank you.

Eliz.