Math, asked by shukla29207, 14 days ago

a+1/a=4.Then a^2-1/a^2=?

Answers

Answered by devinichenametla

0

Answer:

a+1/a=4

on squaring both sides

a²+1/a²+2=16

a²+1/a²=14

(a-1/a)²=a²+1/a²-2

=14-2=12

a-1/a=√12

a²-1/a²=(a+1/a)(a-1/a)=4√12

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