3 x 4 ) 18 2 x 5 July 8, 2019 16 32 64 128 3 x 4 )+ 18 2 x 5 18 x 3 2x 4 x 5 2x x 3 5 x 4 18 x 2 3x 3 x 2 y 18 5 x 4 y 8 3 x cube 4 x square 5 x 18 x 2 3 3 4 x 5 1 2 x 18 2 x 2 3 x 2 18 5x x 2 4 X 4 5x 3 x 2 21x 18 5 x 4 mũ 2 18 x 3 mũ 2
