Question

4) Add the following expressions:
(1) ab + bc + ca and -bc-ca - ab
(ii) p2 - 7pq - q2 and -3p2-2pq +7q2​

Answer 1

Answer:

bcgxbchxgxxbcbxbxvcbc

Answer 2

Step-by-step explanation:

1) ab+bc+ca+(-bc-ca-ab)

ab+bc+ca-bc-ca-ab

Rearrange the terms in the expression:

ab-ab+bc-bc+ca-ca

=0

2)p^2-7pq-q^2+(-3p^2-2pq+7q^2)

p^2-7pq-q^2-3p^2-2pq+7q^2

Rearrange the terms in the expression:

p^2-3p^2-7pq-2pq+7q^2-q^2

-2p^2-9pq+6q^2