5y 4 )( 5y 2 July 8, 2019 16 32 64 128 5y 4 5y 2 600y 5y 4 5y 2 2 0 4 5y 2x )( 5y 2x 4 5y 1 5y 3 2y 4 5y 2 5y 10 3y 2 5y 4 )-( 5y 2 6y 9 5y =4 5