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First question P1 May / June 2006 Question 11 (i) Functions f and g are defined by f : x → k − x for x ∈ R, where k is a constant, g : x →9 / x + 2 for x ∈ R, x ≠ −2. (i) Find the values of k for which the equation f(x) = g(x) has two equal roots and solve the equation f(x) = g(x) in these...