Question 57880
Hello Sher

to solve, substitute the numbers in for x

f(0)=0^2-7(0)+10.
f(0)=10

f(5)=5^2 - 7(5) + 10
f(5)=0

The last one follows the same line substitute in -2 for x, remember when squaring a negative number it comes out positive, and when subtracting a negative it is the same as adding a positive. 

Try the last one for yourself, If you have any problems please feel free to email me.

good Luck