Given that ((sqrt{3} - 5sqrt{2})(sqrt{3} + sqrt{2}) = p + qsqrt{6}), find q.

FURTHER MATHEMATICSWAEC 2006

Given that \((\sqrt{3} - 5\sqrt{2})(\sqrt{3} + \sqrt{2}) = p + q\sqrt{6}\), find q.

    • A. 4
  • B. -4
  • C. -5
  • D. -7

Correct Answer: B. -4

Explanation

\((\sqrt{3} - 5\sqrt{2})(\sqrt{3} + \sqrt{2}) = 3 + \sqrt{6} - 5\sqrt{6} - 10\)

= \(-7 - 4\sqrt{6} = p + q\sqrt{6}\)

\(\therefore q = -4\)

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