Someone please help me with this algebra problem

The factorization of 8x3 -125 is (2x-5)(jx2 +kx+25)

I'm confused on this could anyone me and show me what i need to do to solve it.

The frequency table shows the results of a survey comparing the number of beach towels sold for full price and at a discount during each of the three summer months. the store owner converts the frequency table to a conditional relative frequency table by row. which value should he use for x? round to the nearest hundredth. 0.89 0.90 0.92 0.96