45 5 10 x July 8, 2019 16 32 64 128 45 5 x 2 10 45 5 x 10 3 10 45 5 x 4 )= 10 10 + 5 x = 45 chia 3 1 x =( 45 5 )/ 10 45 x 10 puissance 5 45 x 5 45 x 10 45 - 10