Question

(ii) 2p(p²-q²)+q(q²-p²),for p=1,q=2
class 8 chapter 9 algebraic expressions and identities​

Answer 1

The given expressions are classified as

Monomials: 1000, pqr

Binomials: x + y, 2y − 3y2, 4z − 15z2, p2q + pq2, 2p + 2q

Trinomials: 7 + y + 5x, 2y − 3y2 + 4y3, 5x − 4y + 3xy

Polynomials that do not fit in any of these categories are

x + x2 + x3 + x4, ab + bc + cd + da..

Answer 2

Answer:

2×1(1-4)+2(4-1)= 2(-3)+2(3)=-6+6=0