Answer
$\dfrac{4^7}{4^5}=4^2$
$4^2=16$
Work Step by Step
$\dfrac{a^m}{a^n} = a^{m-n}, a \ne 0$
Thus,
$\dfrac{4^7}{4^5}
\\=4^{7-5}
\\=4^2
\\=4(4)
\\=16$
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