=30^n*25/30^n
=25
1- 1/6*(-7)
= 1+7/6
= 13/6
3+3^2m+3^3m=3^2 1
5m=2 1- 1 m=4
Xy 2n * x 2 substitution
1^2n*x^2=x^2=25
It's really easy to get around ~ ~ ~