Factorise x^2 -(a+1/a)x -1
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x^2 - (a+1/a)x - 1
Multiplying eq. by a,
ax^2 - (a+1)x - a
ax^2 - ax + x - a
ax( x - a) + 1( x - a)
x = -1/a , x = a
Multiplying eq. by a,
ax^2 - (a+1)x - a
ax^2 - ax + x - a
ax( x - a) + 1( x - a)
x = -1/a , x = a
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