Math help easy 10 points please help:)

1.(x^5)^10
2.18a^4/3a^2'
3.12/16 in simplest form

assuming expression is

(x^5) ^ 10

law of exponents; to the power of apower, multiply the exponents

x^(5 times 10)

x^50




assuming expression is

18a^4 / 3a^2

law of exponents; divide the bases, subtract the exponents

(18/3) times a^(4-2)

6a^2



assuming expression is

12/16

NOTE that 4 goes into 12 thrice and into 6 four times

3/4

can't simplify further