Question

if y^2+1/y^2=6 find the value of y-1/y​

Answer 1

EXPLANATION.

⇒ y² + 1/y² = 6.

As we know that,

⇒ (y - 1/y)² = y² + 1/y² - 2(y)(1/y).

⇒ (y - 1/y)² = y² + 1/y² - 2.

Put the value of y² + 1/y² = 6 in the equation, we get.

⇒ (y - 1/y)² = 6 - 2.

⇒ (y - 1/y)² = 4.

⇒ (y - 1/y) = √4.

⇒ (y - 1/y) = 2.

Answer 2

Answer:

Answer is ± 2

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