Question

(6a³+2a²-8a-9)+(8a³-a²-6a+1)=?​

Answer 1

$(6a^3+2a^2-8a-9)+(8a^3-a^2-6a+1)=6a^3+2a^2-8a-9+8a^3-a^2-6a+1=14a^3+a^2-14a-8$