Question

utilise os produtos notaveis para calcula:
a) 103^2=
b)99^2=
c)51 . 49

Answer 1

a)
103² = 103.103 = 10609

    103
 x 103
-------------
    309
  000 
103 +
---------------
 10609

*******************************
b)
99² = 99.99 =  9801

     99 
  x 99
---------
   891
 891 +
-----------
 9801

*********************************
c)
51.49 = 2499

    51
 x 49
--------
  459
204 +
-----------
2499