Question

(√5+2√3) (2√3-√5) is
1. Rational
2. irrational
3. both rational And irrational
4. Neither rational nor irrational​

Answer 1

Step-by-step explanation:

$( \sqrt{5} + 2 \sqrt{3} )(2 \sqrt{3} - \sqrt{5}) \\ = 2 \sqrt{15} - 2 \sqrt{15} \\ = 0 \\ \therefore \: it \: is \: rational .\\ \\ 1. \: Rational$