f(x)=x2(squared)-7x+10, find (a)f(0), (b) f(5), and (c) f(-2)

Answer 1

Put the given value in for x and calculate f(x)

I will do the middle one to show you how to do them.

f(5) = 5^2 - 7(5) + 10
f(5) = 25 -35+10
f(5) = 0

Answer 2

Is this right for the third one?
f(-2)=-2^2-7(-2)+10
f(-2)=-4-14+10
f(-2)=-8

Answer 3

Is this right if I substitute -2 for x?
f(x)=x^2-7x=10

f(-2)=-2^2-7(-2)+10
f)-2)=-4-(-14)+10
f(-2)=-8

Answer 4

(-2)(-2) = +4
(-7)(-2) = +14

Answer 5

Thank you so much I came up with an answer of 28 after some struggling.