Salut ,
2⁷+⁵ = 2¹²
9²¹+¹ = 9²²
10.2¹+¹² = 10.2¹³
je te laisse la 7 et 8
2³*4⁶ = 2³ *2⁶*2⁶ = 2³+⁶+⁶ = 2¹⁵
8²*16 = 2⁶*2⁴ = 2¹⁰
(a³)² = a³*² = a⁶
2²*4⁷ = 2²*2¹⁴ = 2¹⁶
3⁶*9¹⁵ = 3⁶*3³⁰ = 3³⁶
(25/9)³*(5/3)² = (25/9)³(25/9) = (25/9)⁴
la 12 pour toi très simple ;))
