Does anyone know to solve 36x⁴+ 12x⁸ divided by 12x4

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

A. 127 cm^2 b. 144.5 cm^2 c. 172 cm^2 d. 50 cm^2

Hardest math question of all time can you solve the equation. check for extraneous solutions.9∣9-8x∣ = 2x+3