Question

x la 2plus 1 supra x la 2 stiind ca x_1 supra x egal cu 3

Answer 1

(x²+1)/x²=?
(x-1)/x=3 ⇒x-1=3x ⇒2x=-1⇒x=-1/2
(1/4+1)/1/4=5/4.4/1=5