6 years ago in Quantitative Aptitude

The term that should be added to (4x2+8x) so that resulting expression be a perfect square, is ?

[A] 2
[B] 2x
[C] 4
[D] 1
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Nazia Sayed
Nazia Sayed - 4 years ago

Nazia Sayed from Mumbai, India is saying 4 is correct answer

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Provided Sin(A-B) = SinACosB - CosASinB, then Sin15will be?

  • [A] \[\frac{\sqrt{3}}{2\sqrt{2}}\]
  • [B] \[\frac{\sqrt{3}-1}{2\sqrt{2}}\]
  • [C] \[\frac{\sqrt{3}+1}{2\sqrt{2}}\]
  • [D] \[\frac{\sqrt{3}-1}{\sqrt{2}}\]