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Important questions for Algebraic Expressions and Identities Class 8 Maths CBSE Part 3



In this page we have Important questions for Algebraic Expressions and Identities Class 8 Maths CBSE Part 3 . Hope you like them and do not forget to like , social share and comment at the end of the page.

Question 1

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

(i) xyz2 + 3xy

 (ii) 1 - x -2 x2

(iii) 4p2q2 – 4p2q2r2 + r2

 (iv) 4 – xy + yz – xz

 (v) (x/4) –(y/5) -y

 (vi) 1.3a – 2.6ab + 1.5b

 

Question 2

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

x2 + y2

1000-x

x + x2 + x3 + x4 + x5

8 - y +-5x

2y – 3y2

2y – 3y + 4y3

5x – 8y + 3xy

4 – 15z2

ab + bc + cd + da+ 2ab

pqr+2pq+5pqr

p2q + pq2

2p + 2q+1

 

Question 3

 Add the following.

(i) ab – bc+ ac, bc – ca+ ab, ca – ab-2bc

 (ii) p – q + pq, q – r + qr, r – p + pr , p+q+r

 (iii) 2p2q2 – 3pq + 4, 5 + 7pq – 3p2q2 ,4p2q2 + 10pq

 (iv) a2 + b2, b2 + c2, c2 + a2, 2ab + 2bc + 2ac

 

 

Question 4.

(a) Subtract 8a – 7ab + 3b - 20 from 20a – 9ab + 5b – 20

 (b) Subtract 3pq + 5qr – 7pr+1 from -4pq +2qr – 2pr + 5pqr+1

 (c) Subtract 4p2q – 4pq - 5pq2 – 8p + 7q – 18

from 18 – 3p – 11q + 5pq – 2pq2 + 5p2q

 

 

Question 5

What are the coefficient of each term in the below expression?

4p2q2 + 4p2q2r2 - r2 +5

a)  4,4,-1,5

b)  4,4,1,5

c) 4,4r2 ,-r2, 5

d) None of these

 

Question 6

The product of a monomial and trinomial will be a

a)  monomial

b)  trinomial

c) binomial

d) None of these

 

Question 7

The exponents of a variable term in the polynomial is a

a) integers

b)  negative integers

c) positive integers

d) non -negative integers

 

Question 8

The expression pqr +rqp+qpr is a

a) Monomial

b)  trinomial

c) binomial

d) none of these

 

 

 

 

 

 


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