Rational Algebraic Expressions

Which of the following statement describes a rational algebraic expression?

• It is the reverse process of multiplication.

• Fraction which numerator and denominator are polynomials

• Fraction which numerator and denominator are whole numbers

• It cannot be factored using only integers

For what value of x will the expression \frac{x+2}{2x+4} be undefined?

• -1/2

• -1

• -2

• -4

• 4 / 7v²

• 4 / 7v

• 20 / 35v

• 20 / 35v²

• 7(r + 2)/ (r + 2)

• (r - 8) / (r + 2)

• (r + 2) / 7

• (r - 8) / 7

• 2

• 7

• 3

• 0

• -2

• 2

• 7

• 3

• 0

• -2

• 2

• 7

• 3

• 0

• -2

• 2

• 7

• 3

• 0

• -2

• 2

• 7

• 3

• 0

• -2

Which of the following is NOT a rational algebraic expression?