Classify into monomials, binomials and trinomials. (i) 4y - 7z (ii) y2 (iii) x + y - xy (iv) 100 (v) ab - a - b (vi) 5 - 3t (vii) 4p2q - 4pq2 (viii) 7mn (ix) z2 - 3z + 8 (x) a2 + b2 (xi) z2 + z (xii) 1 + x + x2

(i) 4y – 7z

Binomial.

An expression that consists of two unlike terms is called a binomial.

(ii) y2

Monomial.

An expression with only one term is called a monomial.

(iii) x + y – xy

Trinomial.

An expression that consists of three terms is called a trinomial.

(iv) 100

Monomial.

An expression with only one term is called a monomial.

(v) ab – a – b

Trinomial.

An expression that consists of three terms is called a trinomial.

(vi) 5 – 3t

Binomial.

An expression that consists of two unlike terms is called a binomial.

(vii) 4p2q – 4pq2

Binomial.

An expression that consists of two unlike terms is called a binomial.

(viii) 7mn

Monomial.

An expression with only one term is called a monomial.

(ix) z2 – 3z + 8

Trinomial.

An expression that consists of three terms is called a trinomial.

(x) a2 + b2

Binomial.

An expression that consists of two unlike terms is called a binomial.

(xi) z2 + z

Binomial.

An expression that consists of two unlike terms is called a binomial.

(xii) 1 + x + x2

Trinomial.

An expression that consists of three terms is called a trinomial.