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Evaluate (2√3 - 4) (2√3 + 4) 

Mathematics
JAMB 2018

Evaluate (2√3 - 4) (2√3 + 4) 

  • A. -4
  • B. -2
  • C. 2
  • D. 4
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Correct Answer: Option A
Explanation

2√3 - 4) ( 2√3 + 4)

  = 12 + 8√3 - 8√3 – 16

  = 12 – 16

  = -4

  The two expressions in the bracket are conjugate of each other

There is an explanation video available below.


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Explanation Video

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