Question

Add,
(5r^(4)-4r^(3)+3r^(2)+15r-8)+(r^(5)+12r^(3)+8r^(2)-3r+5)+(-8r^(4)+r^(2)-9r-5)
just double checking if my answer is correct, thank you..

r^5-3r^4+8r^3+12r^2+3r-8

Answer 1

yep, it's right :D

Answer 2

yay...thank you Turing