Math, asked by ameena2221, 2 months ago

if a-1/a=8 and a is not = 0 find a^2-1/a^2​

Answers

Answered by Goofdood
0

Answer:

Step-by-step explanation:

a-1/a = 8

⇒a-1 = 8a

⇒-1=7a

⇒a=(-1)/7

∴a² - 1 / a²

⇒(-1/7)² - 1/ (-1/7)²

⇒ (1/49) - 1 / (1/49)    

⇒     1-49/49

       _______

          1/49

⇒ -48/49

   ______

      1/49

⇒     -48 × 49

        _______

            49

⇒  -48

Hope this helps

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