Which polynomial is in standard form?

Which of the choices shown could be used to prove that aacp=abcp ?

How do i start to solve? would appreciate a walk-thru! a bird sitting 16ft above the ground in an apple tree dislodges an apple. after how many seconds does the apple land on the ground? (assuming that no branches will interfere with it's fall)

Solve each quadratic equation by factoring and using the zero product property. n^2 - 49 = 0