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(x²+x)/(x+4)>0 /*(x+4)² , x≠-4
x(x+1)(x+4)>0
____-4_____-1____0______>x
_ _ 0 + + 0 _ _ 0 + +
D={(-4,-1) u (0,+∞)}
Odp. w zalaczniku.