a-1/a=3 find a^2+1/a^2
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a-1/a = 3
squaring on both sides
(a-1/a)^2 = (3)^2
a^2 + 1/a^2 - 2×a×1/a = 9
a^2 + 1/a^2 -2 = 9
a^2 + 1/a^2 = 11
squaring on both sides
(a-1/a)^2 = (3)^2
a^2 + 1/a^2 - 2×a×1/a = 9
a^2 + 1/a^2 -2 = 9
a^2 + 1/a^2 = 11
Answered by
1
a-1/a =3
(a-1/a)² = a²+1/a² -2a×1/a
3² = a² + 1/a² -2
9+2 = a² +1/a²
11= a² +1/a
11 is answer
(a-1/a)² = a²+1/a² -2a×1/a
3² = a² + 1/a² -2
9+2 = a² +1/a²
11= a² +1/a
11 is answer
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