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ThousandStars
@ThousandStars
May 2019
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Bonsoir, j'aurai besoin d'aide pour résoudre ça s'il vous plaît, merci d'avance :)
Le x est au carré et (x+4) est aussi au carré
f(x) = x - (x+4)
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winner123
Verified answer
X² - ( x + 4)² = ( x + x + 4) ( x - x - 4) = ( 2 x + 4) ( - 4)
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MAHAM
BONSOIR
C est sous la forme a²-b²=(a-b)(a+b) ici mon a=x et b=x+4
f(x) = x² - (x+4)²
=(x-(x+4)(x+(x+4)
=(x-x-4)(x+x+4)
=-4(2x+4)
0 votes
Thanks 1
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Verified answer
X² - ( x + 4)² = ( x + x + 4) ( x - x - 4) = ( 2 x + 4) ( - 4)C est sous la forme a²-b²=(a-b)(a+b) ici mon a=x et b=x+4
f(x) = x² - (x+4)²
=(x-(x+4)(x+(x+4)
=(x-x-4)(x+x+4)
=-4(2x+4)