Is 3(4x-2)=12x-6 no solution, one solution, infinitely many solutions

In the polynomial below, what number should replace the question mark to produce a difference of squares? x2 + ? x - 36

Aball is dropped from a height of 10m above the ground. it bounce to 90% of its previous height on each bounce. what is the approximate height that the ball bounce to the fourth bounce?

5. write an equation for the line that is parallel to the given line and that passes through the given point. y = –5x + 3; (–6, 3)