Mathematics, 28.10.2019 23:31 zmeister
1. payton says that rational expressions are not closed under addition, subtraction, multiplication, or division. his
claim is shown below. is he correct for each case? justify your answers.
a. x / 2x + 1 +x + 1 / 2x + 1 = 1, and 1 is a whole number, not a rational expression.
b. 3x − 1 / 2x + 1 − 3x − 1 / 2x + 1 = 0, and 0 is a whole number, not a rational expression.
c. x − 1 / x + 1 ∙x + 1 / 1 = x − 1, and x − 1 is a whole number, not a rational expression.
d. x − 1 / x + 1÷1 / x + 1 = x − 1, and x − 1 is a whole number, not a rational expression.
Answers: 2
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