Réponse:
النشر :
A= (5x - 3) - (5x × 2x + 5x × 3 - 3 × 2x - 3 × 3)
A= (5x -3) - (10x² + 15x - 6x - 9)
A= (5x -3) - (10x² + 9x -9)
A= 5x -3 -10x² - 9x + 9
A= 5x - 9x -10x² -3 +9
A= -4x - 10x² + 6
احسب قيمة النسبة من أجل x=-1 :
A= (5×-1 -3) - (5×-1 -3)×(2×-1 + 3)
A= (-5-3) - (-5 -3)×(-2 + 3)
A= (-8) - (-8)×(1)
A= (-8) - (-8)
A= -8 +8
A= 0
