Question

9. If x + 1/x = 7 Find the value of x?+ 1/x?​

Answer 1

${\bold{\huge{\underline{\blue{Given:}}}}}$

${\bold{x+\frac{1}{x}=7}}$

${\bold{\huge{\underline{\pink{To\:find:}}}}}$

${\bold{x²+\frac{1}{x²}=?}}$

${\bold{\huge{\underline{\orange{Formula:}}}}}$

${\boxed{\sf{a²+b²=(a+b)²-2ab}}}$

${\bold{\huge{\underline{\green{Solution:}}}}}$

${\bold{x²+(\frac{1}{x})²}}$

${\bold{=(x+\frac{1}{x})²-2(x)(\frac{1}{x})}}$

${\bold{=(7)²-2(1)}}$

${\bold{=}}$${\boxed{47}}$${\bold{→}}$${\bold{\red{\sf{Answer}}}}$

Answer 2

Answer:

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