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If (2x + 3)3 = 125, find the value of x

Mathematics
WAEC 2009
If (2x + 3)3 = 125, find the value of x
  • A. 1
  • B. 2
  • C. 3
  • D. 4
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Correct Answer: Option A
Explanation
(2x + 3 )2 = 125

2n + 3 = 3\(\sqrt{125}\)

2x + 3 = 5

2x = 5 - 3

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

= 1
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Post-UTME Past Questions - Original materials are available here - Download PDF for your school of choice + 1 year SMS alerts
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