Question

If a-1/a=5, find the value of a×a+1/a×a​

Answer 1

Answer:

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Answer 2

Answer:

$a^2+\frac{1}{a^2} =27$

Step-by-step explanation:

$a-\frac{1}{a} =5$

Squaring on both sides , we get ,

  =>   $(a-\frac{1}{a} )^2=5^2$

    $=> a^2 +\frac{1}{a^2} -2.a.\frac{1}{a} =25\\\\=>a^2+\frac{1}{a^2} -2 =25\\\\=>a^2+\frac{1}{a^2} =27$

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