Factor this expression completely, then place the factors in the proper location on the grid. x3 - 1

The lengths of two sides of a right triangle are given. find the length of the third side. round to the nearest tenth if necessary. a) y = 12/5x + 39/5 b) y = 5/12x + 5/39 c) y = 12/5x - 39/5 d) y = 5/12x - 5/39

Ineed with math stuff it involves graphs

What is r i 4.5+10r=-6.5 with work pls