DODAWANIE I ODEJMOWANIE UŁAMKÓW ALGEBRAICZNYCH
1.Wykonaj działania;podaj konieczne założenia
3/x-3+4+x/x
odp:x^2+4x-12/x(x-3)
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1.
3/(x-3) + (4+x)/x = [3x+(4+x)(x-3)]/[x(x-3) = (3x+4x-12+x²-3x)/[x(x-3) = (x²+4x-12)/[x(x-3)]
Z: x ≠ 3
x ≠ 0