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Recent questions tagged algebra

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GATE Electrical 2018 | GA | Question: 4
For what values of $k$ given below is $\dfrac{(k + 2)^2}{(k - 3)}$ an integer?$4 , 8 , 18 $ $4 , 10 , 16$$ 4 , 8 , 28 $ $8 , 26 , 28$
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GATE Electrical 2014 Set 1 | GA | Question: 4
If $(z+1/z)^2 = 98,$ compute $(z^2+1/z^2).$
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