Classify into monomials, binomials and trinomials.

(i) 4y – 7z

(ii) y^{2}

(iii) x + y – xy

(iv) 100

(v) ab – a – b

(vi) 5 – 3t

(vii) 4p^{2}q – 4pq^{2}

(viii) 7mn

(ix) z^{2} -3z + 8

(x) a^{2} + b^{2}

(xi) z^{2} + z

(xii) 1 + x + x^{2}

(i) 4y – 7z

As the expression contains two terms expression is Binomial.

(ii) y^{2}

As the expression contains one term expression is Monomial

(iii) x + y – xy

As the expression contains three terms expression is Trinomial

(iv) 100 is a constant polynomial.

As the expression contains one term expression is Monomial

(v) ab – a – b

As the expression contains three terms expression is Trinomial

(vi) 5 – 3t

As the expression contains two terms expression is Binomial

(vii) 4p^{2}q – 4pq^{2}.

As the expression contains two terms expression is Binomial

(viii) 7mn

As the expression contains one term expression is Monomial

(ix) z^{2} -3z + 8

As the expression contains three terms expression is Trinomial.

(x) a^{2} + b^{2}

As the expression contains two terms expression is Binomial

(xi) z^{2} + z

As the expression contains two terms expression is Binomial

(xii) 1 + x + x^{2}

As the expression contains three terms expression is Trinomial

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