If a^2+1/a^2=2, find a^2-1/a^2
Pls solve ,it's really urgent for me..
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a^2+1/a^2 = 2
=> a^2+1 = 2a^2 => 2a^2 - a^2 = 1
=> a^2 =1
now, a^2-1/a^2
=> 1-1/1
= 0
=> a^2+1 = 2a^2 => 2a^2 - a^2 = 1
=> a^2 =1
now, a^2-1/a^2
=> 1-1/1
= 0
justjasonpong:
I think it's incorrect
why
I cannot understand how it will be 0
Hey plz explain
You are wrong
a^2 = 1, as i solve then a^2-1 = 0
Hey
How
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