Question

simplify 3r+n^2-r+5-2n+2

Answer 1

First combine like terms.
3r, -r,  = like terms
-2n,+n = like terms
+5, +2 = like terms
n^2 = unlike term
Combine the like terms
Put them in standard form (exponent first, alphabetically ordered variables, constants)
n^2 - 2r -1n + 7