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Sagot :

HIRONDELLE52

Bonsoir,

A = 5 (3x + 2)

= 15x +10

B = -3(2x-5)

= -6x +15

C = 5x (-3x + 2)

= -15x² +10x

D = -4 (5x - 2).​

= -20x +8

3)

4x-8-3x +7 -2x +3

= -x +2

A = 5*3x + 5*2 = 15x+10

B = -3*2x - 3*(-5) = -6x + 15

C = 5x*(-3x) + 5x*2 = -15x²+10x

D = -4*5x - 4*(-2) = -20x+8

et

A = 4x - 8 - 3x + 7 - 2x + 3

   = 4x - 3x - 2x - 8 + 7 + 3

   = - x + 2

puisque k(a+b) = ka + kb

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