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What value of g will make the expression 4x2 - 18xy + g a perfect...

Mathematics
JAMB 1997
What value of g will make the expression 4x2 - 18xy + g a perfect square?
  • A. 9
  • B. \(\frac{9y^2}{4}\)
  • C. 81y^2
  • D. \(\frac{18y^2}{4}\)
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Correct Answer: Option D
Explanation
4x2 - 18xy + g = g \(\to\) (\(\frac{18y}{4}\))2

= \(\frac{18y^2}{4}\)
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