Sagot :
Bonsoir,
A(x) = -(5x - 2)
= -5x + 2
B(x) = (2 - 5x) × 3
B(x) = 6 - 15x
C(x) = -7x + 3 + 8x - 1
C(x) = x + 2
D(x) = 3(x + 5) - 2
D(x) = 3x + 15 - 2
D(x) = 3x + 13
E(x) = 2(4 - x) - (-x + 1)
E(x) = 8 - 2x + x - 1
E(x) = 7 - x
Bonjour,
Développer et réduire les expressions suivantes :
A(x) = -(5x - 2)= -5x+2
B(x)= 3(2 - 5x)= 6-15x
C(x)= -7x + 3 + 8x - 1= x+2
D(x)= 3(x + 5) -2= 3x+15-2= 3x+13
E(x)= 2(4 - x) - (-x + 1)= 8-2x+x-1= -x+7