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AP EAMCET · Maths · Complex Number

If \(1, \omega, \omega^2\) are the cube roots of unity, then \((2-\omega)^2\left(2-\omega^2\right)^2\left(2-\omega^{10}\right)^2\left(2-\omega^{11}\right)^2=\)

  1. A \(-7^4\)
  2. B \(7^4\)
  3. C \(7^8\)
  4. D \(-7^8\)
Verified Solution

Answer & Solution

Correct Answer

(B) \(7^4\)

Step-by-step Solution

Detailed explanation

\(1, \omega, \omega^2\) are the cube roots of units. \(\Rightarrow 1+\omega+\omega^2=0\) Given, \((2-\omega)^2\left(2-\omega^2\right)^2\left(2-\omega^{10}\right)^2\left(2-\omega^{11}\right)^2\)…