Bonsoir
^ = puissance
A = (3²+5)^-1 x 2 x (2 -1)
A = (9+5)^-1 x 2 x 1
A = 14^-1 x 2
A = 1.4 x 2 = 2.8
B = 5² -3² ; 4²
B = 25 -9 : 16
B = 16/16 = 1
C = 2^3 - 5 x 3 +7
C = 8 -15 +7
C = 15 -15 = 0
D = 3² +2 x5 +5² - (3² +5²)
D = 9 +10 +25 - (9 +25)
D = 9 +10 +25 -9 -25
D = 10
