Question

If y =x^2 + 3x - 5, find y when

x = -4

the answer should be -1 but i somehow got 23 if someone could show working out that would be appreciated

Answer 1

yes it is -1

Explanation:

you made something wrong in the power 2 where x power 2 removes the negative sign

or u didn't enter in the calc this sign(....)^2