book Maths Puzzle Numerical Ability

How do you find the equation from a prarbola? I have all the points for the parabola, but I don't know how to find the equation.

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Divide

2x^3 -3x^2 -3x +6 Divided by X - 1 Problem: 2c divided by 3b, where b = 4 and c = 6. I say the answer is 1, the text I was using shows the answer as 16? I believe it to be a misprint. What is the correct answer?