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Q : 4             (c) Subtract  $4p^2q - 3pq + 5pq^2 - 8p + 7q - 10$     from                                                      $18 - 3p - 11q + 5pq - 2pq^2 + 5p^2q$

Q : 4            (b) Subtract   $3xy+5yz-7zx$   from   $5xy-2yz-2zx+10xyz$

Q : 4          (a)   Subtract  $4a-7ab+3b+12$​   from   $12a-9ab+5b-3$

12a-9ab+5b-3-(4a-7ab+3b+12)  =(12-4)a +(-9+7)ab+(5-3)b +(-3-12)  =8a-2ab+2b-15

Q : 3           Add the following.

(iv) $l^2+m^2+n^2 , n^2+l^2, 2lm+2mn+2nl$

Q : 2             Add the following.

(iii) $2p^2q^2-3pq+4, 5+7pq-3p^2q^2$

Q : 2              Add the following.

(ii) $a-b+ab, b-c+bc, c-a+ac$

Q : 3            Add the following.

(i) $ab-bc , bc -ca, ca-ab$

ab-bc+bc-ca+ca-ab=0.

Q : 2            Classify the following polynomials as monomials, binomials, trinomials. Which
polynomials do not fit in any of these three categories?

(l) $2p+2q$

Binomial.

Q : 2           Classify the following polynomials as monomials, binomials, trinomials. Which
polynomials do not fit in any of these three categories?

(k) $p^2q+pq^2$

Binomial.

Q : 2          Classify the following polynomials as monomials, binomials, trinomials. Which
polynomials do not fit in any of these three categories?

(j) $pqr$

Monomial.

Q : 2           Classify the following polynomials as monomials, binomials, trinomials. Which
polynomials do not fit in any of these three categories?

(i) $ab+bc+cd+da$

This polynomial does not fit in any of these three categories.

Q : 2             Classify the following polynomials as monomials, binomials, trinomials. Which
polynomials do not fit in any of these three categories?

(h) $4z-15z^2$

Binomial.

Q : 2          Classify the following polynomials as monomials, binomials, trinomials. Which
polynomials do not fit in any of these three categories?

(g) $5x-4y+3xy$

Trinomial.

Q : 2          Classify the following polynomials as monomials, binomials, trinomials. Which
polynomials do not fit in any of these three categories?

(f) $2y-3y^2+4y^3$

Trinomial.

Q : 2          Classify the following polynomials as monomials, binomials, trinomials. Which
polynomials do not fit in any of these three categories?

(e)  $2y-3y^2$

Binomial.

Q : 2         Classify the following polynomials as monomials, binomials, trinomials. Which
polynomials do not fit in any of these three categories?

(d) $7+y-5x$

Trinomial.

Q : 2          Classify the following polynomials as monomials, binomials, trinomials. Which
polynomials do not fit in any of these three categories?

(c) $x+x^2+x^3+x^4$

This polynomial does not fit in any of these three categories.

Q : 2       Classify the following polynomials as monomials, binomials, trinomials. Which
polynomials do not fit in any of these three categories?

(b) $1000$

Monomial.

Q : 2           Classify the following polynomials as monomials, binomials, trinomials. Which
polynomials do not fit in any of these three categories?

(a) $x+y$

Binomial.

Q : 1         Identify the terms, their coefficients for each of the following expressions.

(vi) $0.3a-0.6ab+0.5b$

The terms are 0.3a, -0.6ab and 0.5b and the coefficients are 0.3, -0.6 and 0.5.
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