যদি x+1/x = 4 হয় , তাহলে x/(x2-3x+1) এর মান কত?
সমাধান
সঠিক উত্তর: Option A
Here,
x+1/x=4
or, (x2+1)/x = 4
or, x2+1 =4x
now,
x/(x2-3x+1)
= x/(x2+1-3x)
= x/(4x-3x)
= x/x
=1
x+1/x=4
or, (x2+1)/x = 4
or, x2+1 =4x
now,
x/(x2-3x+1)
= x/(x2+1-3x)
= x/(4x-3x)
= x/x
=1
