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x in (-oo:+oo)
r = (2*p^2)/q-3 // - (2*p^2)/q-3
r-((2*p^2)/q)+3 = 0
r-2*p^2*q^-1+3 = 0
r-2*p^2*q^-1+3 = 0
x należy do R
x in (-oo:+oo)
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