X 2 2 25y 4 July 8, 2019 16 32 64 128 Factor x 2 2 25y 4 X 2 25y 2 4x 4 X 2 25y 2 4y 2 4y 4 X 4 )- 10x 2 y 2 )+ 25y 4 X 5y 2 )( x 2 5xy 2 25y 4