Sagot :
bonsoir
A=(5x+2)-(6x+4)
A = 5 x + 2 - 6 x - 4 = - x - 2
B=(-5x+3)+(4x-5) = - 5 x + 3 + 4 x - 5 = - x - 2
C=(-3x-4)-(8x+3) = - 3 x - 4 - 8 x - 3 = - 11 x - 7
D=(5x²+3)-(8x²-2x+3) = 5 x² + 3 - 8 x² + 2 x - 3 = - 3 x² + 2 x
E=(6x²-3x+5)+ (-4x²-3x-4) = 6 x² - 3 x + 5 - 4 x² - 3 x - 4 = 2 x² - 6 x + 1
Bonsoir,
Simplifier les expressions suivantes:
A=(5x+2)-(6x+4)= 5x+2-6x-4= -x-2
B=(-5x+3)+(4x-5)= -5x+3+4x-5= -x-2
C=(-3x-4)-(8x+3)= -3x-4-8x-3= -11x-7
D=(5x²+3)-(8x²-2x+3) = 5x²+3-8x²+2x-3= -3x²+2x
E=(6x²-3x+5)+ (-4x²-3x-4)= 6x²-3x+5-4x²-3x-4= 2x²-6x+1