Find \displaystyle\lim_{x\to -4}\dfrac{7x+28}{x^2+x-12} x→−4 lim x 2 +x−12 7x+28 limit, start subscript, x, \to, minus, 4, end subscript, start fraction, 7, x, plus, 28, divided by, x, squared, plus, x, minus, 12, end fraction.

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