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x = 5/2 x = -1
Akar persamaaan baru
(x+1/x)(x+1/x)
(x+2/5)(x-1) = x^-3/5x-2/5 = 5x^-3x-2
x1+x2= -1/x1-1/x2= -(x1+x2)/x1x2
= -(3/2)/-(5/2)
= 3/5
x1.x2= 1/(x1.x2)= -2/5
pers kuadrat baru:
x^2-3/5x-2/5= 0
5x^2-3x-2=0