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You substitute x=2 into values p(x), p'(x) and p''(x) and since there's a triple root at this value, these 3 equations are all equal to 0. You should get the following equations: 1. p(2): 4a+2b+c=0 2. p'(2): 32+12a+4b+c=0 3. p''(2): 24+6a +b = 0 (the equations are all simplified) for equation...