( 1 25 ) x 2 = 5 x 5 July 8, 2019 16 32 64 128 1 25 x 2 5 x 5 25 x 5 x 2 26 5 x 1 X 3 )/( x 2 )- 25 1 /( x 5 1 /( x 5 1 5 x 2 1 5 x 1 6 25 1 x 5 1 x 5 2x x 2 25 1 25 x 57 1 25 x 41 2 5 14 1 5 x 10 )= 2 5 25 x Tính nhanh 1 25 x 57 1 25 x 41 2 5 1 25 x 4 5 x 8 2 5 x 8 7 x 4 (1 5) ^ x 2 25
