if a-1/a=2,find a^2+1_a^2
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Answered by
1
a-1/a=2
a=2a+1
a=-1
-(1)^2 +1-1
2-1
=1
answer brainly plz
a=2a+1
a=-1
-(1)^2 +1-1
2-1
=1
answer brainly plz
Answered by
5
a - 1/a = 2
On squaring both side
(a - 1/a)^2 = 2^2
a^2 + 1/a^2 - 2×a × 1/a = 4
a^2 + 1/a^2 - 2 = 4
a^2 + 1/a^2 = 4 - 2
a^2 + 1/a^2 = 2
Thanks
On squaring both side
(a - 1/a)^2 = 2^2
a^2 + 1/a^2 - 2×a × 1/a = 4
a^2 + 1/a^2 - 2 = 4
a^2 + 1/a^2 = 4 - 2
a^2 + 1/a^2 = 2
Thanks
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