Using the property of squares, find the value of the following.
(a) 24² – 23²
(b) 50² – 49²
(c) 105² – 104²

For the following question we can use the identity a² - b²  =(a+b)(a-b)
a)24 ² -23² =(24+23)(24-23)
                  =47*1
                   =47
b)50²-49² =(50+49)(50-49)
                 =99*1
                 =99
c)105²  -104² =(105+104)(105-104)
                      =209*1
                      =209