Which expression is equivalent to (x2-7/5x-4) - (2x+9/5x-4)

The number of pages in the u.s. tax code exceeds the number of pages in the king james bible by 18,528. the combined number of pages in the tax code and the bible is 21,472

In what form is the following linear equation written y=9x+2

Complex numbers multiply √-4 * √-25 and show all intermediate steps. alternative notation is sqrt(-4) * sqrt(-25).