X 4 = 9 x July 8, 2019 16 32 64 128 X 4 9 x X 4 9 x 2 3 X 4 9 x 2 X 4 9 x 6 X 4 9 x 3 X 4 9 x 10 X 4 9 x 1 X 4 9 x )= 3x 2 X 4 9 x 5 X 4 9 x 1 2 X 4 9 x answer X 4 )( x 9 ≥ 0 X 4 )( x 9 )= 0 4 x 9 x 7 4 x 9 x 25