Question

(6c^-2cd)+(10c^+18cd)=

(14mn-15m)+(-15mn-14m)=

(3a^-7b^)+(6b^-2a^)=

Answer 1

(6c^-2cd)+(10c^+18cd)=16c^2-16cd

(14mn-15m)+(-15mn-14m)=-mn-29m

(3a^-7b^)+(6b^-2a^)=a^2-b^2