4 36x 2 July 8, 2019 16 32 64 128 4 36x 2 0 X 4 36x 2 4x 4 36x 2 4x 4 36x 2 0 X 4 36x 2 0 36x 4 49y 2 36x 4 y 2 36x 4 13x 2 1 36x 4 25y 2 36x 4 25x 2 4 36x 4 25 X 4 36x 2 factored completely 9x 4 36x 2 4x 4 36x 2 81
