Exercice 1 et 2 sur les Puissance Merci

A= 5 x 10^8 x 10^-6 x 2 x 10^2
= 10^8 x 10^-6 x 10^2 x 5 x 2
= 10^2 x 10^2 x 10
= 10^4 x 10
= 10^5

B= (10^4)^2 x 10-2 / 10^6 x 10^3
= 10^8 x 10-2 / 10^9
= 10^6 / 10^9
= 10^-3

C= 2 x 4^2 - 7 x (2-4)^3
= 2 x16 - 7 x (-2)^3
= 32 - 7 x (-8)
= 32 - (-56)
= 88

D= -4^2 + 10^3 x 10^-1 + (-3)^2
= -16 + 10^2 + 9
= -7 + 100
= 93

E= (2^2 x 3) + 4^2 x 1/4) - (-6)^2
= (4 x3) + 16/4 - 36
= 12 + 16 - 36
= 28 - 36
= -8