Question

Find the value(s) of any relative extrema. f(x)=x^2 -10x +33, i have found f'(x) and solved for zero, which equals 5, how is the extrema 8 at 5? how is this worked out?

Answer 1

??????????
the extrema is (5,8)

Answer 2

yes but how do you get 8?

Answer 3

u got the x=5 solve for 0 in the derivative

Answer 4

now in the function find the value f(5)

Answer 5

ahhh thank you very much