So im in a Math exam and there is a question i do not know how to answer.
So the question is 'N sqaured - N - 90 = 0' solve the eqaution.
so please help me, i do not have a clue how to answer it and i cannot fail again.
N^2 - N - 90 = 0 factor
(N - 10) (N + 9) = 0 setting each factor to 0, we have that N = 10 or N = -9
Is this for real ?
Is a person sitting in an exam really being sent the answer to a question ?
Hopefully the exam was already over when the answer was posted.