please give the correct answer and please solve it in step by step method write full process please
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Answer:
7
Step-by-step explanation:
a-1/a=3
on squaring both sides,
a^2+1/a^2-2(a x 1/a)=9 ((a+b)^2=a^2+b^2+2ab)
a^2+1/a^2-2=9
a^2+1/a^2=9-2=7
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