Réponse :
Bonjour,
* = multiplication
A= -2(x + 8)
= -2*x + (-2*8)
= -2x - 16
B=3(5x-2)
= 3*5x + 3*(-2)
= 15x + (-6)
= 15x - 6
C=-10(-x-6)
= -10*(-x) + (-10)*(-6)
=10x -10*(-6)
= 10x + 60
D = X(3x + 7)
= x*3x + x*7
= 3[tex]x^{2}[/tex] + 7x
E=-3x(6 + 4x)
= -3x*6 + (-3x)*4x
= -18x - (3x)*4x
= -18x - 12[tex]x^{2}[/tex]
F=-3x(11 - 9x)
= -3x*11 + (-3x)*(-9x)
= -33x - 3x*(-9x)
= -33x - (-27[tex]x^{2}[/tex])
= -33x + 27[tex]x^{2}[/tex]
