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mrgxxtrd
@mrgxxtrd
January 2021
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Bonjour je dois fractionner le calcul suivant, merci d'avance:
49x²-25
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slyz007
Verified answer
Bonjour
49x²-25=(7x)²-5²
Rappel a²-b²=(a+b)(a-b)
donc 49x²-25=(7x+5)(7x-5)
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mrgxxtrd
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Verified answer
Bonjour49x²-25=(7x)²-5²
Rappel a²-b²=(a+b)(a-b)
donc 49x²-25=(7x+5)(7x-5)