0 0 votes Let $x=\sqrt{4+\sqrt{4-\sqrt{4+\sqrt{4-}}}} \dots$ to infinity. Then $x$ equals $3$ $\frac{\sqrt{13} -1}{2}$ $\frac{\sqrt{13} +1}{2}$ $\sqrt{13}$ Quantitative Aptitude cat2005 quantitative-aptitude algebra + – go_editor 14.2k points 1.2k views answer comment Share Follow Print 0 reply Please log in or register to add a comment.