Please help me I will mark as the BRAINLIEST

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Answer:
a) 3^2×3^2
=3^(2+2)
=3^4
b)7×7^4
=7^(1+4)
=7^5
c)10^9÷10^7
=10^(9-7)
=10^2
d)5^8÷5
=5^(8-1)
=5^7