(x-a)*(x-b)*(x-c)*(x-d)*(x-e)*(x-f)*(x-g)*(x-h)*(x-i)*(x-j)*(x-k)*(x-l)*(x-m)*(x-n)*(x-o)*(x-p)*(x-q)*(x-r)*(x-s)*(x-t)*(x-u)*(x-v)*(x-w)*(x-x)*(x-y)*(x-z) what it will be?

Well, computers would be able to do this, it would take a lot of time to do it by expanding..

If you want the degree, then it is x^26 (as x is being multiplied by itself 26 times)