a) 12n = 144
Solution: RHS 144= 12X12 = 122
12n = 122
Equating powers because base is same
n = 2
b) (2/8 )2n X (2/8 )n = (2/8 )6 c) 72n+1 ÷ 49 = 73 d)(-5)4 ÷ (-5)2 = (-5)n
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