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mayafraise
@mayafraise
January 2021
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Pouvez vous m'aider a développer ces expressions?
-3x au carré -5 + 4x - x au carré - 11x +7
et celle ci : 5x au carré + (10x au carré - 4)-(3x au carré -7)
Merci
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GHANAMI
Bonjour voici une solution :
1)
-3x²-5+4x-x²-11x+7 =(-3x²-x²)+(4x-11x)+(-5+7)
-3x²-5+4x-x²-11x+7 =-4x²-7x+2
2)
5x au carré + (10x au carré - 4)-(3x au carré -7)
5x²+10x²-4-(3x²-7) =(5x²+10x²-3x²)+(-4+7)
5x²+10x²-4-(3x²-7)=12x²+3
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1)
-3x²-5+4x-x²-11x+7 =(-3x²-x²)+(4x-11x)+(-5+7)
-3x²-5+4x-x²-11x+7 =-4x²-7x+2
2)
5x au carré + (10x au carré - 4)-(3x au carré -7)
5x²+10x²-4-(3x²-7) =(5x²+10x²-3x²)+(-4+7)
5x²+10x²-4-(3x²-7)=12x²+3