+2498 
so in the equation above, I am asked to prove that these equations are equal if a_1, a_2, . . . , a_n be real numbers and m and n integers with m ≤ n. I don't understand how is it possible that they are equal since when I write the equation in a different form the first part will be:
a_(1+m)*a_(2+m)*a_(3+m)...*a_(n+m+m)
and the second part will be:
a_(1+m)*a_(2+m)*a_(3+m)...*a_(n+m)
