4y 5 2 2y 1 6 y July 8, 2019 16 32 64 128 4y 2 5 )( 2y 1 )- 3y y 2 6 2y 2 5 1 2y 2 6y 2 3 4y 4 5y-2 3y+1 6y - 5(4 2y + 1) + 4(1 4y - 2) = - 20 7
