Question on: WAEC Mathematics - 2010
Given that (\frac{5^{n +3}}{25^{2n -2}}) = 5o, find n
A
n = 1
B
n = 2
C
n = 3
D
n = 5
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Correct Option: C
(\frac{5^{n +3}}{25^{2n -2}}) = 5o
(\frac{5^{n + 3}}{5^{2(2n - 3)}}) = 5o
n + 3 - 4n + 6 = 0
-3n + 9 = 0
-3n = -9
n = (\frac{-9}{-3})
n = 3
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