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NIELIT 2017 July Scientist B (CS) - Section B: 19

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A. $(x+y)(x+y) = x + y$

B. $(x+y) (xy) = xy$

C. $(x+y) (xy)' = (x+y)(x'+y') = xy' + x'y$

D. $(x+y) (xy' + x'y) = xy'+x'y$

None of the options give the required results.
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