simplify these?

Question

assume there is no denominator.

7^8 over
7^2


-5pq^7 over
10p^6q^3


x^3y^0x-7

(5r-2)-2 over
(2r^3)^2

(r^2t5)0
(t^-1)


I will give you 10 points, this is xtra credit by the way.

Answer 1

7^8 over
7^2 equals
(7^8) / (7^2) =
7*7*7*7*7*7*7*7 / 7*7 =
(7/7)(7/7)*7*7*7*7*7*7 =
7*7*7*7*7*7 =
7^6

6 = 8 - 2
(7^8) / (7^2) = 7^(8 - 2) = 7^6

Your turn . . .