Question

(x + 1/x)( x- 1/x) = _____.​

Answer 1

Answer:

its is equal to 0 see the question wit mind

Step-by-step explanation:

zero is the answer

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Answer 2

Answer:

x^2 - 1/(x)^2 = (x^4 - 1)/x^2

Step-by-step explanation:

since x^2 + y^2 = (x+y)(x-y)

therefore

(x+1/x)(x-1/x) = x^2 - (1/x)^2

= x^2 - 1/(x)^2

= (x^4 - 1)/x^2