(3r²+7r+1)+(4r² - 8r-2)

Question

A) 7r^2 + 15r - 1

B) 7r^2 - r - 1

C) 7r^2 - 15r - 3

D) r^2 - r - 1

Answer 1

The expression simplifies to 7r² - r - 1. Therefore, the answer is B) 7r² - r - 1.