AP EAMCET Engineering 2018 Apr 22 Shift 2 Paper

Section: Mathematics

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Question : 9 of 160

Marks: +1, -0

If ω is a complex cube root of unity, then

[

51+73ω+87ω2

73+87ω+51ω2

+

51+73ω+87ω2

87+51ω+73ω2

]15=

1
−1
0
2

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