Rational Expressions Quiz

Example Questions From the Test

• 1Which expression is a rational expression, meaning it can be written as a quotient of two polynomials?
  • The exponential quotient 2ˣ/(x − 3)
  • The radical expression √x + 1
  • The polynomial quotient (x² − 4)/(x + 1)
  • The radical-denominator expression 1/(√x − 1)
• 2What is the sum 2/x + 3/(x + 1)?
  • (5x + 2)/[x(x + 1)]
  • 5/[x(x + 1)]
  • 5/(2x + 1)
  • (5x + 3)/[x(x + 1)]
• 3What is the least common denominator of 6/(x² − 4) and 5/[x(x − 2)]?
  • x²(x − 2)(x + 2), which repeats the factor x
  • x(x − 2), which omits the factor x + 2
  • x(x² − 4)(x − 2), which repeats the factor x − 2
  • x(x − 2)(x + 2), containing each distinct factor once