Question 56065
f(x)=x^of 2  -7x+10; find (a)f(0 ),(b) f(5), and (c)f(-2) 

did you mean f(x)=x^2-7x+10?
if so:
a.  f(0)=(0)^2 - 7(0) + 10
       =0-0+10 = 10
b.  f(5)= (5)^2- 7(5) + 10
       = 25 - 35 + 10 = 0
c.  f(-2)= (-2)^2-7(-2) + 10
       = 4 + 14 + 10 = 28