Algebraic Expressions and Identities - Solutions 2
CBSE Class –VIII Mathematics
NCERT Solutions
CHAPTER - 9
Algebraic Expressions and Identities (Ex. 9.2)
NCERT Solutions
CHAPTER - 9
Algebraic Expressions and Identities (Ex. 9.2)
1. Find the product of the following pairs of monomials:
(i)
(ii)
(iii)
(iv)
(iv)
Ans.
(i) = =
(ii) =
=
(iii) =
=
(iv) =
=
(v) = = 0
2. Find the areas of rectangles with the following pairs of monomials as their lengths and breadths respectively:
Ans.
(i) Area of rectangle
=
= sq. units
(ii) Area of rectangle
=
=
= sq. units
(iii) Area of rectangle =
=
= sq. units
(iv) Area of rectangle =
=
= sq. units
(v) Area of rectangle =
=
= sq. units
3. Complete the table of products:
(i)
Ans.
(i)
Ans.
(i)
4. Obtain the volume of rectangular boxes with the following length, breadth and height respectively:
(i)
(ii)
(iii)
(iv)
Ans. (i) Volume of rectangular box
=
= cubic units
(ii) Volume of rectangular box
=
= cubic units
(iii) Volume of rectangular box
=
= cubic units
(iv) Volume of rectangular box
=
5. Obtain the product of:
(i)
(ii)
(iii)
(iv)
(v)
Ans.
(i)
=
(ii) =
=
(iii)
=
(iv)
=
(v) =(-1)(mxmxmxnxnxp)
=