All are real numbers except -1.
Why is it referred to as a rational expression?
An algebraic expression wherein each the numerator and the denominator are polynomials e.g. is referred to as a rational expression. for the reason that denominator can't be 0 there are values of x that can be excluded from the rational expression.
What is the real number?
Real numbers are numbers that include each rational and irrational numbers. Rational numbers such as integers (-2, zero, 1), fractions(1/2, 2.5) and irrational numbers together with √three, π(22/7), and so on., are all actual numbers.
Learn more about real numbers here: brainly.com/question/723406
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