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Mathematics 2015 JAMB Past Questions

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61

Factorize \( a^2 − b^2 − 4a + 4 \)

  • A. (a + b)(a − b)
  • B. (a − 2 + b)(a - 2- b)
  • C. (a + 1)(a − 2 + b)
  • D. (a + b) 2
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62
Given that tan x = \(\frac{2}{3}\), where 0o d" x d" 90o, Find the value of 2sinx.
  • A. \(\frac{2\sqrt{13}}{13}\)
  • B. \(\frac{3\sqrt{13}}{13}\)
  • C. \(\frac{4\sqrt{13}}{13}\)
  • D. \(\frac{6\sqrt{13}}{13}\)
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