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Rational Expressionshard
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Determine the value of kkk such that the rational function f(x)=x2+kx−12x2+x−6f(x) = \frac{x^2+kx-12}{x^2+x-6}f(x)=x2+x−6x2+kx−12​ has a removable discontinuity at x=2x=2x=2.