Question

Add the following expressions: (i) ab−bc, bc−ca, ca−ab (ii) 5p2q2+4pq+7, 3+9pq−2p2q2 (iii) l2+m2+n2, lm+mn, mn+nl, nl+lm (iv) 4x3−7x2+9, 3x2−5x+4,... Pls answer fast I will mark brainliest

Answer 1

Answer:

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

It implies:-

ab-bc+bc-ca+ca-ab.

Here every term can be cancelled by other.

Therefore answer is "0"..

(2) 5p2q2+4pq+7+(3+9pq-2p2q2).

5p2q2+4pq+7+3+9pq-2p2q2.(as we have to simplify bracket first).

3p2q2+13pq+10...(this is the solution)