X 2 10x 25 9 July 8, 2019 16 32 64 128 X 3 )( x2 10x 25 )= 9 x 5 X2 10x 25 x2 9 4x 20 2x 6 X 2 10x 25 x 2 9x 20 9 5 x )+ x 2 10x =- 25
