1.

(7x + 2)-(x2 + 5) in Z_10 =

A. 9x<sup>2</sup> + 7x + 7
B. 9x<sup>2</sup>+ 6x + 10
C. 8x<sup>2</sup> + 7x + 6
D. None of the mentioned
Answer» B. 9x<sup>2</sup>+ 6x + 10


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