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____-2___-1____1_____2_______>x
+ + 0 _ _ 0 + + 0 _ _ 0 + + +
Odp. x∈(-2,-1) u (1,2)
b)
______-2_____0____1_____3________>x
+ + 0 + + 0 _ _ 0 + + 0 _ _ _
Odp. x∈(-∞,-2)u(-2,0)u(1,3)