Question

Add:-
(4x³-x2²y+9xy²-2x+11y+17)+(2x²y+15xy²-7y-1)​

Answer 1

Step-by-step explanation:

History is the study of life in society in the past, in all its aspect, in relation to present developments and future hopes. It is the story of man in time, an inquiry into the past based on evidence.