Thread: Special Products Question

This is the problem:

(2^m+1)^2
by the special product rules it equals
4^(mm)+4^m+1
but if I plug in 2 as m then
(2^2+1)^2=25 but 4^4+4^2+1 does not equal 25

could someone please explain why this will not check

Originally Posted by Silverwolph

This is the problem:

(2^m+1)^2
by the special product rules it equals
4^(mm)+4^m+1
but if I plug in 2 as m then
(2^2+1)^2=25 but 4^4+4^2+1 does not equal 25

could someone please explain why this will not check

Isn't it obvious ...... .

Using the ordinary product rule:

.