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CBSE Questions for Class 8 Maths Algebraic Expressions And Identities Quiz 2 - MCQExams.com

State whether True or False.
Multiply: 23a7b2  and 94ab5.
The answer is 32a8b7.
  • True
  • False
Multiply:
5cd2  by 5cd2
  • 25c2d5
  • 25c3d4
  • 25c2d3
  • 25c2d4
Multiply:
23ab by 14a2b
  • 16a3b3
  • 16a3b2
  • 16a4b2
  • 16a3b4
State whether True or False.
Multiply: 4a  and 6a+7.
The answer is 24a2+28a.
  • True
  • False
State whether True or False.
Multiply: 2a25a4  and 3a.
The anwser is 6a3+15a2+12a.
  • True
  • False
Use identities to solve: (97)2
  • 9,659
  • 9,409
  • 9,009
  • 9,209
Simplify: x2(35y2)+x(xy23x)2y(y2x2y)
  • 6x22y23x2y
  • 6x2
  • 3x2y
  • 2y2
Use the identity (a+b)(ab)=a2b2 to evaluate:
33×27.
  • 891
  • 881
  • 981
  • 841
Use the identity (a+b)(ab)=a2b2 to evaluate:
21×19.
  • 389
  • 399
  • 289
  • 429
Solve for x(502)2
  • 2,52,004
  • 2,62,104
  • 2,22,004
  • 2,52,864
Use identities to evaluate: (101)2
  • 11,601
  • 12,761
  • 10,111
  • 10,201
If 49x2b=(7x+12)(7x12), then the value of b is :
  • 0
  • 12
  • 14
  • 12
Evaluate using the expansion of (a+b)2 or (ab)2 :
(92)2
  • 8444
  • 8464
  • 8474
  • 8414
Evaluate using expansion of (a+b)2 or (ab)2 :
(188)2
  • 35444
  • 35484
  • 35344
  • 35384
Obtain the product of 2,4y,8y2,16y3
  • 1045y5
  • 1024y6
  • 1634y3
  • 102y5
The product of 23xy and 32xz is equal to
  • 16 xyz
  • x2yz
  • 6x2yz
  • none of these
Obtain the product of a,a2,a3
  • a5
  • a6
  • a3
  • a5
Obtain the volume of rectangular boxes with the following length, breadth and height respectively.
xy,2x2y,2xy2
  • 16x3y4
  • 4x2y3
  • 4x4y4
  • 4x2y2
Find the product of  4p,0
  • 44
  • 1
  • 4p
  • 0
Obtain the volume of rectangular boxes with the given length, breadth and height respectively.
2p,4q,8r
  • 64pqr
  • 16pqr
  • 32pqr
  • 8pr+r
Obtain the product of a,2b,3c,6abc
  • 36a2b2c3
  • 36a3b2c2
  • 36a2b2c2
  • 36a2b3c2
Carry out the multiplication of the expressions of a given pair.
ab,ab
  • abb
  • a2b+ab
  • abab2
  • a2bab2
Simplify: x(3x+2)
  • 3x2+2
  • 3x+2
  • 3x2+2x
  • 3x2+x
Carry out the multiplication of the given expressions.
a+b,7a2b2
  • a3b27a2b3
  • a3b2+7a2b3
  • 7a3b3+7a2b2
  • 7a3b2+7a2b3
The value of (x2y)(2x)(3y3) is
  • 12x2y4
  • 6x3y4
  • 3x3y4
  • x3y4
(a+b)2(ab)2 will be equal to 2ab:
  • True
  • False
  • Ambiguous
  • Data insufficient
Find the solution of (2x+6)2.
  • x2+24x+36
  • 4x2+24x+6
  • 4x2+24x+36
  • 4x224x+36
What is the coefficient of x when x+6 is multiplied by 2x3?
  • 15
  • 15
  • 9
  • 9
The coefficient of the product of two monomials is not equal to the product of their coefficient.
  • True
  • False
  • Sometimes
  • Data insufficient
107×107+93×93=?
  • 19578
  • 19418
  • 20098
  • 21908
  • None of these
0:0:2


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