Question

what istha value of this

Answer 1

{25^(5/2) - 25^(7/2)}/{25^(3/2)}
=
25^(5/2) { 1 - 25^(2/2)} /{25^(3/2)}
=
25^(5/2 - 3/2) { 1-25}
=
25 * (-25)
=
-625