Question

add the following expressions:- (1) p²- 3p+ 12,3p- 2p²+1 and p²+ p+ p+ 9
(2) 4m²+ 3mn+ n²,2m²+ 3n²-5 and 8n²+ 3m²-5
(3) a²- b-3,2b²- 3ab- 3a²,3-7a²- b² and 2a²+ 2b²+ 2b²+ ab
(4) 5p²q+ 2pq-3 q²,-2q²- pq- p²q and pq- 2q²-5 p²q with explaintion​

Answer 1

Answer:

a) 2p+22

b) 9m^2 +3mn+12n^2 -10

c) -7a^2 -b+5b^2 -2ab

d) -p^2q +2pq-7q^2

Step-by-step explanation:

write the same variables vertically and add them.