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What is equal to the rational expression below when x 2 or 3?

I can see no rational expression below.


What is equal to the rational expression when x 5 or negative 3 x2 plus x-6 over x2-2x-15?

When x = -3


What is the value of the rational expression below when xis equal to 3?

This is wrong


What is the value of the rational expression below when x is equal to 3?

4


What is the value of expression negative 12 minus 3 plus 9?

Negative 12 minus 3 plus 9 is equal to -6


Is negative 3 rational or irrational?

-3 is a rational number


Why is negative 3 a rational number?

Any integer, whether it is positive or negative, is a rational number.


Is negative 2 3rds rational?

-2/3 is a rational number


Can any number serve as the denominator in a rational expression?

The math definition of a rational number is any number a/b so that both a and b are integers, except b ( the denominator) cannot be zero. So if you can manipulate the expressions to become this form, a/b, then it is the equavilent of a rational expression. Rational algebraic expressions are similar, except they contain variables. The same condition for the denominator must be true. The entire expression in the denominator cannot equal zero, but the variable might equal zero. Ex. a 1 / (x-1) .... x-1 cannot equal zero, which means that x cannot equal 1. Ex. b (1/3)/(1/4) can be simplified into 4/3 which is a rational number.


Is negative 12 over negative 3 rational?

Yes: -12/-3 = 4


Is negative 3 a rational?

Yes. It can be written as -3/1.


What is negative 10 cubed?

The answer would normally depend on the form of the expression: (-10)^3 or -10^3 but in this case they both equal -1000