4 9 5x July 8, 2019 16 32 64 128 4 9 5x 2 )= 356 4 9 5x 2 4 5x2 9 4 5x5 9 4 5x 9 4x 4 5x 9 =- 3 X 4 9 5x 4 2x 9 5x Log1 4 9 5x )=- 3 3x 4 5x 9 7x 4 5x 9 4 5x7 9 4 5x10 9 4 5x 9 2 34 38 9 4 5x 6