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Integration by Partial Fractions

Solve for x: ...

Question

Solve for x:

$4^{x - 2} / 2^{x + 1} = 1$

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Solution

The correct option is A 5
$4^{x - 2} / 2^{x + 1} = 0$
$=> 2^{2 x - 4} / 2^{x + 1} = 0$
$=> 2^{2 x - 4 - x - 1} = 0$
$=> 2 x - 4 - x - 1 = 0$
$=> x = 5$

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