Question

If 5x+x2>100 then x is not 10,8,7,or 9?

Answer 1

Plug each in and check?

Answer 2

eg try x=10:

5*10 + 10^2 > 100

true or false? Then check the others

Answer 3

False

Answer 4

Yep, now check the others.. .you can do it in your head even

Answer 5

Thanks