If a is positive and a4-62a2+1 = 0, find the value of a3+(1/a3)	Choose the correct option:	A) 424	B) 648	C) 392	D) 488	E) None
Explanation :   Given a4-62a2+1 = 0   488ividing by a2   a2-62+(1/a2) = 0 =&gt; a2+(1/a2) = 62   =&gt; a2+(1/a2)+2 = 64 =&gt; (a+(1/a))2 = 64   Hence a+(1/a) = 8 or -8   Since a&gt;0 so a+(1/a) = 8   Now (a+(1/a))3 = a3+(1/a3)+3(a+(1/a))   =&gt; 512 = a3+(1/a3)+24   =&gt; a3+(1/a3) = 488   Answer : 488
<result>D</result>
If a is positive and a4-62a2+1 = 0, find the value of a3+(1/a3)