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Solve for x in the equation \(5^{x} \times 5^{x + 1} = 25\).

Further Mathematics
WAEC 2016

Solve for x in the equation \(5^{x} \times 5^{x + 1} = 25\).

  • A. \(-2\)
  • B. \(\frac{-1}{2}\)
  • C. \(\frac{1}{2}\)
  • D. \(2\)
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Correct Answer: Option C
Explanation

\(5^{x} \times 5^{x+1} = 25\)

\(5^{x} \times 5^{x+1} = 5^{2}\)

\(5^{x+x+1} = 5^{2}\), equating powers,

\(2x + 1 = 2 \implies 2x = 1\)

\(\therefore x = \frac{1}{2}\)


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JAMB CBT Software 2025 - Free Download
WAEC Past Questions, Objective & Theory, Study 100% offline, Download app now - 127076
JAMB CBT 2025 - Candidates, Schools, Centres, Resellers - Get Ready!
JAMB CBT Mobile App 2025 - Free Download
WAEC Past Questions, Objective & Theory, Study 100% offline, Download app now - 127076
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