Question

Add and subtract polynomials

Answer 1

(w^2+5w) + (2w^2 +w +7)
 when adding or subtracting polynomials, just combine the like terms from each set:

w^2 + 2w^2 = 3w^2

5w +w = 6w

so you would have : 3w^2 + 6w + 7