Bonjour
Développer puis réduire les expressions littérales
A = (4x - 8) - (3x - 7) + (- 2x + 3)
A = 4x - 8 - 3x + 7 - 2x + 3
A = 4x - 3x - 2x - 8 + 7 + 3
A = - x + 2
B = (6x² - 5x + 7) - (4x² - 5x - 5)
B = 6x² - 5x + 7 - 4x² + 5x + 5
B = 6x² - 4x² - 5x + 5x + 7 + 5
B = 2x² + 12
C = (3x² - 5x + 2) + (2x² - 2x + 8) - (3 - 2x + 2x²)
C = 3x² - 5x + 2 + 2x² - 2x + 8 - 3 + 2x - 2x²
C= 3x² + 2x² - 2x² - 5x - 2x + 2x + 2 + 8 - 3
C = 3x² - 5x + 7
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Bonjour
Développer puis réduire les expressions littérales
A = (4x - 8) - (3x - 7) + (- 2x + 3)
A = 4x - 8 - 3x + 7 - 2x + 3
A = 4x - 3x - 2x - 8 + 7 + 3
A = - x + 2
B = (6x² - 5x + 7) - (4x² - 5x - 5)
B = 6x² - 5x + 7 - 4x² + 5x + 5
B = 6x² - 4x² - 5x + 5x + 7 + 5
B = 2x² + 12
C = (3x² - 5x + 2) + (2x² - 2x + 8) - (3 - 2x + 2x²)
C = 3x² - 5x + 2 + 2x² - 2x + 8 - 3 + 2x - 2x²
C= 3x² + 2x² - 2x² - 5x - 2x + 2x + 2 + 8 - 3
C = 3x² - 5x + 7