Question

Ex 9 va rog!imi trebuie rezolvarea urgent!

Answer 1

$=2log_{2+ \sqrt{3} } \frac{(2- \sqrt{3})(2+ \sqrt{3}) }{2+ \sqrt{3} }=2 log_{2+ \sqrt{3} } \frac{1}{2+ \sqrt{3} }=2[0- log_{2+ \sqrt{3} }(2+ \sqrt{3})]=$-2