What is the difference x/x2-16 - 3/x-4

The midpoints of the sides of the large square are joined to form a smaller square. what is the area of the smaller square

Which steps could be part of the process in algebraically solving the system of equations, y+5x=x^2+10 and y=4x-10

The water aquarium shark tank is always greater than 25 feet of the water level decreased by 6 feet during cleaning what was the water level before the cleaners took out any water