Question

If x^2+1/x^2=7 find x-1/x​

Answer 1

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Answer 2

Step-by-step explanation:

Given equation is x^2+1/x^2=7

$= > x^2+1/x^2=2 + 5$

$= > x^2+1/x^2 - 2 = 5$

we can write it as,

$= > x^2+1/x^2 - 2 \times x \times (1/ x) = 5$

we know that,

$= > (x - 1/x)^2=5$

Answer:(x - 1/x)^2=5