If the zeroes of the polynomial x^3-3x^2+x+1 are a-b, a,a+b find a and b

This question awards 100 ! i really don’t want to fail i will also mark you !

The table below shows the height of a ball  x  seconds after being kicked.  what values, rounded to the nearest whole number, complete the quadratic regression equation that models the data? f(x)  =  x2  +  x  +  0based on the regression equation and rounded to the nearest whole number, what is the estimated height after 0.25 seconds?   feet

Write the function for the graph. (1.8) (0,4)