Question

plz tell this answer ​

Answer 1

Answer:

It is also 2.

I hope it helps...

Answer 2

If the value of { (x) + (1/x) } = 2, then the value of (x²) + (1/x²) = 2.

• Given value of { (x) + (1/x) } = 2

• Squaring both the sides, we get,

{ (x) + (1/x) }² = 2²

• Applying the formula (a + b)² = a² + 2ab + b², we get,

(x)² + 2.(x).(1/x) + (1/x)² = 4 [ Here, a = x, b = (1/x) ]

• Or, x² + 2 + (1/x²) = 4 [ x and (1/x) get cancelled ]

• Or (x²) + (1/x²) = 4 - 2

• Or, (x²) + (1/x²) = 2