Answer:
75^10
(because of the product of powers rule)
if they have the same base(number being raised to the power: A^b then A would be the base)then you can add the exponents the simplify
75^3=421,875
75^7=1.334838867^13
Explanation:
75*75*75=421,875
This is because you are multiplying it by itself three times
and
75*75*75*75*75*75*75=1.334838867^13
This is because you are multipying it by itself seven times
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