Réponse :
a = (13^4 x 13^5) / 13^2 ^signifie puissance
a = 13^(4 + 5 -2) car (b^n) x (b^p) = b^(n +p)
a = 13^7 et (c^k) / (c^j) = c ^(k-j)
b = 6^(-5) / [6 x (6^(-2))^3] car (d^n)^p = d^(n+p)
b = 6^(-5) / [6 x 6^(-2 x 3)]
b = 6^(-5 -(1-6))
b = 6^(-5+5)
b =6^0
b = 1
c = (1.3 x 1.3^10) / [(1.3^2 x 1.3^3)^2]
c = (1.3^11) / [(1.3^5)^2]
c = (1.3^11) / (1.3^10)
c = 1.3^(11-10)
c = 1.3
j'espère avoir aidé
