Question

$\frac{2+ \sqrt{3} }{2- \sqrt{3} }$ + $\frac{2- \sqrt{3} }{2+ \sqrt{3} }$

Answer 1

(2+√3)/(2-√3)+(2-√3)/(2+√4)= [(2+√3)²+(2-√3)²]/1= 4+4√3+3+2-4√3+3 = 12