Home » Rationalize the denominator of the expression (frac{6 + 2sqrt{5}}{4 – 3sqrt{6}})

Rationalize the denominator of the expression (frac{6 + 2sqrt{5}}{4 – 3sqrt{6}})

Rationalize the denominator of the expression (frac{6 + 2sqrt{5}}{4 – 3sqrt{6}})

  • A.
    (frac{12+ 4sqrt{5 + 7} 5 + 6sqrt{3}}{39})
  • B.
    (frac{-(24 + 18sqrt{6} + 8sqrt{5} + 6sqrt{30})}{39})
  • C.
    (frac{24 + 3sqrt{6 + 8} 5 + 6sqrt{30}}{19})
  • D.
    (frac{-15 + 3sqrt{5 + 18} 5 + 6sqrt{30}}{36})
  • E.
    (frac{-(12 + 4sqrt{5} +9sqrt{6} + 3sqrt{30})}{19})
Correct Answer: Option E
Explanation

Rationalize using the reciprocal of the denominator to multiply through 

(i.e. Multiply both numerator and denominator using (4 + 3sqrt{6}) )

Watch your signs in the course of this.