differentiate (x^2 + 3x + 2) - (4x - 1)

Answer 1

I have a test tomorrow and i'm stuck on this question ):

Answer 2

well to differentiate or find the derivative you would use the "sum or difference rule"
which would be
derivative of first factor minus derivative of second factor
and i think you would have to use the power rule too
i hope you know the power rule if not then
you bring the power out in front of the variable and decrease the power by one (in other words power minus 1)
for example if it is x^3
then you bring 3 out in front and subtract power by one
which gives you 3x^2

now to your question
answer is

(2x + 3) - (4)

it would only be x for 2x because 2-1 = 1 and you don't have to write to the power of one
and derivative of 2 would be zero and same for -1
hope this helps, good luck for your test, i also have one tomorrow :)