Sagot :
Réponse :
Explications étape par étape
a) A= 5X3x+5X2 b) B = -3X2x--3X5 c) C = 5xX-3x + 5xX2
= 15x+10 = -6x + 15 = -15x2 + 10x
2) A= 4xX3x+4xX2 + 5X3x+5X2 b) B= 5xXx+5xX7 + -2Xx + -2X7
= 12x2 + 8x + 15x + 10 = 5x2+35x + -2x2+-14
= 12x2 + 23x + 10 = 3x4 + 35x + -14
a) A= 2Xx + 2X3 b) B= 2X-5x + 2X3 c) C= 5x+3
= 2x2 + 6 = -10x + 6
d) D= 2X-2 + 2X3x
= -4 + 6x