Remove all perfect squares from inside the square root of 75yz^2

Plz me i need i will give a brain

Factor this polynomial completely x^2-64

Someone answer asap for ! michele pushes a box d meters across a floor. she uses a force f, in newtons, to push the box. she pushes the box for t seconds. the formula p = fd/t calculates the power, p, in watts, that it takes for michele to complete the task. solve the formula for d.