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Find x if \(\frac{16^{2 + x}}{4} = 64^x\)

Mathematics
JAMB 2024

Find x if \(\frac{16^{2 + x}}{4} = 64^x\)

  • A. 3
  • B. - 3
  • C. 5
  • D. - 5
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Correct Answer: Option A
Explanation

\(\frac{16^{2 + x}}{4} = 64^x\)

16\(^{2 + x} = 4 \times 64^x\)

4\(^{2(2 + x)} = 4^1 \times 4^{3(x)}\)

(Equate coefficients since the bases are the same)

2(2 + x) = 1 + 3x

4 + 2x = 1 + 3x

2x - 3x = 1 - 4

-x = -3

x = 3.


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JAMB CBT Mobile App 2025 - Free Download
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WAEC Past Questions, Objective & Theory, Study 100% offline, Download app now - 127076
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