if y^2+1/y^2=6 find the value of y-1/y
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Answered by
5
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.
Answered by
3
Answer:
Answer is ± 2
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