Question

if x+1x=20 find the value of x square2+ 1x square2

Answer 1

given,

x+x=20

2x=20

x=10............................(1)

 x²+x²..........................(2)

substitute (1) in (2)

10²+10²=200

Answer 2

x+1x=20 ⇒x=20/2=10
Substituting value of x= x²+x²=10²+10²=200