Question

I have the answer can someone just see if I'm right.
f(n)=3n^2-2 and g(n)= n+1
Find and simplify
f(n)+g(n)

Answer 1

what answer did you get

Answer 2

I got 3n^3-1

Answer 3

3n^2 + n is NOT 3n^3

Answer 4

n^2 and n are not like terms, so you don't combine them

Answer 5

So it is just 4n^2-1

Answer 6

if they were, then you still wouldn't change the exponents

ex:

n^2 + n^2 doesn't equal n^4

Answer 7

n^2 + n^2 = 2n^2

Answer 8

no 3n^2 + n is just that...you can't add them because they aren't like terms

Answer 9

the only like terms are -2 and +1

they add to -1

Answer 10

so if you add f and g, you'd get

3n^2+n-1

Answer 11

Oh so it is 3n^2+n-1

Answer 12

yep

Answer 13

ok thank you

Answer 14

you're welcome