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If f(x) = (x + 4)/(x^2 + ax + b) and f(x) has two vertical asymptotes at x=1 and x=2, then find the sum of a and b.

 Aug 2, 2021
 #1
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Equate the denominator to  the quadratic witht the given asymtopes as roots

x^2 + ax+b   =   (x-1)(x-2)

                    = x^2 -3x+2         a = -3    b = 2

 Aug 2, 2021

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