Question

if a2+1/a2=2 then a-1/a =

Answer 1

It may be right
I think so

Answer 2

Answer:

$a-\frac{1}{a}=0$

Explanation:

Given $a^{2}+\frac{1}{a^{2}}=2$ ----(1)

Subtract 2 both sides of the equation,we get

$\implies a^{2}+\frac{1}{a^{2}}-2=2-2$

$\implies a^{2}+\frac{1}{a^{2}}-2\times a \times \frac{1}{a}=0$

$\implies(a - \frac{1}{a})^{2}= 0$

$\implies a-\frac{1}{a}=0$

Therefore,

$a-\frac{1}{a}=0$

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