Answer the 19 question.

Answer the 19 question. 18. 19. , then find the value of x. (E) None of these If x = 137 143 117 128 x2 + xy+y2 , then find the value of and y F x2—xy+y2• 143 137 128 117 (E) None of these

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Answer will be {e}options.
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