exam Maths Puzzle Numerical Ability

Given f(x) = -x3 + 3x2 - x + 4, find f(-2), f(0), and f(3)

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exam Other Question

Please find:

the distance (-2,3,1) and (4,5,-1)

and

midpoint (-2,3,1) and (4,5,-1)

Thanks
find an equation of the line that contains the given pair of points.
(0,7) and (7,0)