Question

If a = 3 - 2√2, find the value of a^2 - 1/a^2.
I will mark braniest to the person who answers first.​

Answer 1

Answer:

a=3−22a1=3−221=(3+22)(3−22)3+22a1=9−83+22=3+22now.a+a1=3−22+3+22=6a−a1=3−22−3−22=−42thusa2−a21=(a+a1)(a−a1)=6×(−42)=−242