Which of the following is true ? 

A) The sum of two rational expressions is always a rational expression

B) p(x)/q(x) is in its lowest terms if LCM [p(x), q(x)] = 1.

C) The additive inverse of 1+xis x2−1.

D) Reciprocal of -2x/x2-1 is x2-1/2x

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1 Answers

A) The sum of two rational expressions is always a rational expression

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