Ask for advice, today The N-1 power of Y minus the square of Y multiplied by the N-2 power of Y minus the 4 power of Y - the N + 1 power of Y multiplied by y =?

Ask for advice, today The N-1 power of Y minus the square of Y multiplied by the N-2 power of Y minus the 4 power of Y - the N + 1 power of Y multiplied by y =?

It is equal to the N-1 power of Y - the N + 2 power of 3Y