Write the quadratic equation whose roots are 6 and -4 and whose leading coefficient is 4

Factor completely. 4p^2 + 36p + 81 express the answer in the form (ap + b)^2

The graph shows the distance y, in inches, a pendulum moves to the right (positive displacement) and to the left (negative displacement), for a given number of seconds x. how many seconds are required for the pendulum to move from its resting position and return? enter your answer in the box.

Can someone answer this question for me