A) 49
B) 50
C) 48
D) 47
E) 64
Correct Answer: A
Solution :
\[(2-\omega )(2-{{\omega }^{2}})(2-\omega )(2-{{\omega }^{2}})\] \[=(2-{{\omega }^{2}}){{(2-{{\omega }^{2}})}^{2}}\] \[={{\{(2-\omega )(2-{{\omega }^{2}})\}}^{2}}\] \[={{\{4-2(\omega +{{\omega }^{2}})+1\}}^{2}}\] \[={{\{4+2+1\}}^{2}}={{7}^{2}}\] \[=49\]You need to login to perform this action.
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