Bonjour,
A= (7-3)x(6-2,5)
= 42 -17,5 -18 +7,5 = 14
B=(-3) ²
-3*-3 = 9
C= -3 ²
-(3*3) = -9
D= 4x [15-(8-3)]
=4* (15 -8 +3)
= 4* 10 = 40
bonjour
A = ( 7 - 3 ) * ( 6 - 2.5)
A = 4 * 3.5
A = 14
B = ( - 3 )² = 9
C = - 3 ² = - 9
D = 4 [15 - ( 8 - 3) ]
D = 4 ( 15 - 5 )
D = 4 * 10
D = 40