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Given that p = 2, q = -5 and r = - 4, evaluate 3p2...

Mathematics
WAEC 2004
Given that p = 2, q = -5 and r = - 4, evaluate 3p2 - q2 - r3
  • A. 101
  • B. 77
  • C. 51
  • D. -27
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Correct Answer: Option C
Explanation
3(2)2 - (-5)2 - (-4)3
3(4) – (25) – (-64); 12 – 25 + 64 = 51
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