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Parisss
@Parisss
July 2022
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Exercice 8 Réduire les expressions suivantes :
a) 722 +63 +5 - (3x2 - 2x + 3); 3x(x + 2) - (2x2 - 2 - 1)
- 2-1
b) 24(3x - 5) - 2(x2 + 2x + 3); 3x(3x + 1)-(3x+1)
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maudmarine
Bonjoura) 7x² + 6x + 5 - (3x² - 2x + 3)= 7x² + 6x + 5 - 3x² + 2x - 3= 4x² + 8x + 23x (x + 2) - (2x² - x - 1)= 3x² + 6x - 2x² + x + 1= x² + 7x + 1b) 2x(3x - 5) - 2 (x² + 2x + 3)= 6x² - 10x - 2x² - 4x - 6= 4x² - 14x - 63x (3x + 1) - (3x + 1)= 9x² + 3x - 3x - 1= 9x² - 1.
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Parisss
Merci c’est pour demain merci encore
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