Question

Сократите дробь

          n+2
     75     
_________

  2n+3         n-2
5           ×   3

Answer 1

75^n-2/15^2n+3+n-2=5^n-2-(2n+3+n-2)= 5^n-2-2n-3-n+2= 5^-2n-3