Find all values of x at which the function f defined by f(x) = x-5 ²-7x+12 is continuous, expressing your answer in in- terval notation. 1. (-∞0, 4) U (4, ∞0) 2 (-∞0, 3) U (3,00) 3. (-∞, 3) U (3,4) U (4, ∞) 4. (-∞, -3) U (-3,4) U (4,00) 5. (-∞, -4) U (-4,-3) U (-3, ∞o)

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