Which shows the following expression using positive exponents?
-3a^-2b^3/15a^-7b^-1 a ≠ 0, b ≠ 0
a a^7b^3b^1/15(3)a^2
b -3a^7b^3b^1/15a^2
c -3(-a^2)b^3/15(-)
d 15a^7b^3b^1/-3a^2
which shows the following expression using positive exponents?
a^3b^-2/ab^-4, a ≠ 0, b ≠ 0
a a^3b^-4/ab^-2
b ab^4/a^3b^2
c -a^3b^4/ab^2
d a^3b^4/ab^2
which expression is equivalent to (4mn/m^-2n^6)^-2 ? assume m ≠ 0, n ≠ 0
a n^6/16m^8
b n^10/16m^6
c n^10/8m^8
d 4m^3/n^8