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l) \( \left(\frac{1}{4}\right)^{x-1}=16^{x+2}= \)

Ask by Griffiths John. in Brazil
Mar 20,2025

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A solução é \( x = -1 \).

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The Deep Dive

Alright, let's dive into the world of exponents! First, we can express both sides of the equation using base 4. Since \(16 = 4^2\), we rewrite it to get: \[ \left(\frac{1}{4}\right)^{x-1} = 4^{-1(x-1)} = 4^{-(x-1)} \] \[ 16^{x+2} = (4^2)^{x+2} = 4^{2(x+2)} = 4^{2x + 4} \] Now equate the two expressions: \[ -(x-1) = 2x + 4 \] Solve for \(x\): \[ -x + 1 = 2x + 4 \] \[ 1 - 4 = 2x + x \] \[ -3 = 3x \Rightarrow x = -1 \] So the solution is \(x = -1\).

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