if a+1÷a 47 then find a-1÷a
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Square both sides,
(a+1/a)^2 = 47^2
=) a^2 + 1/a^2 + 2 = 2209
=) a^2 + 1/a^2 = 2207
=) (a-1/a)^2 = a^2 + 1/a^2 - 2
= 2207-2
= 2205
Hence (a-1/a) = √2205
Hope it's helpful to u.
(a+1/a)^2 = 47^2
=) a^2 + 1/a^2 + 2 = 2209
=) a^2 + 1/a^2 = 2207
=) (a-1/a)^2 = a^2 + 1/a^2 - 2
= 2207-2
= 2205
Hence (a-1/a) = √2205
Hope it's helpful to u.
anurag100:
nyc work bro
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