Answer:
c
Step-by-step explanation:
just take out the brackets and add the like terms.
Answer:4x^2 + 3x + 4
x^2 + 2x + 3 + 3x^2 + x + 1
collect like terms
(x^2 + 3x^2) , (2x + x) , ( 3+1)
4x^2 + 3x + 4
