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SAI International School
                                                       Class VIII


     Mathematics
     Chapter 9- Algebraic Expressions & Identities
     Home assignment
     Subtopic: standard identities



     HOME ASSIGNMENT

         1) Use a suitable identity to get each of the following products:
         (i) (x + 3)(x + 3)
         (ii) (2y + 5)(2y + 5)



       2) Use the identity (x + a)(x + b)

         = x + (a + b)x + ab to find the following products:
            2
         (i)  (x + 3)(x + 7)
         (ii) (4x + 5)(4x + 1)

      3) Find the following squares by using the identities:

         (i)  (b – 7) 2
         (ii) (xy + 3z) 2

      4) Using identities, evaluate:

         (i) 712
         (ii) 992
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