a. 3^(3+(-2))
=3^1
=3
b. 4⁵×4⁴
=4^(5+4)
=4⁹
c. (-5)⁷/(-5)^(-2)
= (-5)^(7-(-2))
=(-5)^(9)
d. a³b⁵/a²b^-1
=a³b⁵b/a²
=a^(3-2) b^(5+1)
=ab⁶
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a. 3^(3+(-2))
=3^1
=3
b. 4⁵×4⁴
=4^(5+4)
=4⁹
c. (-5)⁷/(-5)^(-2)
= (-5)^(7-(-2))
=(-5)^(9)
d. a³b⁵/a²b^-1
=a³b⁵b/a²
=a^(3-2) b^(5+1)
=ab⁶