Add: `3p^2q^2-4pq+5,-10p^2q^2,15+9pq+7p^2q^2`

Identify like terms in the following: 10pq,7p,8q,-p^2q^2-7qp,-7qp,-100q,-23,12q^2p^2,-5p^2,41,2405p,78qp,13p^2,qp^2,701p^2

Add the following: 2p^2q^2-3pq+4 , 5+7pq-3p^2q^2

Show that (4pq+3q)^2-(4pq-3q)^2 = 48pq^2

Subtract 4p^2q-3pq+5pq^2-8p+7q-10 from 18-3p-11q+5pq-2pq^2+5p^2q

Subtract: 4pq-5q^2-3p^2 from 5p^2+3q^2-pq

If 3p^2 = 5p+2 and 3q^2 = 5q+2 where p!=q, pq is equal to

Simplify (2.5 p-1.5 q)^2-(1.5 p-2.5 q)^2

Add: p(p-q),q(q-r) and r(r-p)

Classify the following polynomials as monomials,binomials,trinomials.Which polynomials do not fit in any of these three categories: x+y ,1000, x+ x^2 +x^3 +x^4 , 7+y+2x , 2y-3y^2 , 2y-3y^2 +4y^3 , 5x-2y+3xy , 4z-15z^2 , ab+bc+cd+da, pqr, p^2q +pq^2 ,2p+2q