InterviewSolution
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InterviewSolution
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for the equation `|{:(1,,x,,x^(2)),(x^(2),,1,,x),(x,,x^(2),,6):}|=0`A. There are exactly two distinct rootsB. there is one pair of equation real rootsC. There are three pairs of equal rootsD. Modulus of each root is 2 |
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Answer» Correct Answer - C `Delta = (1+ x+x^(2)) |{:(1,,1,,1),(x^(2),,1,,x),(x,,x^(2),,1):}| =(1-x^(3))^(2)` Therefore `Delta =0` has roots `1,1 ,omega, omega, omega^(2),omega^(2)` |
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