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Ameely
@Ameely
April 2019
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Bonsoir
Aidez moi s'il vous plait je galère je comprends rien. C'est super important c'est pour demain. J'offre 20 points à ceux qui m'aideront. C'est l'exercice 11
Merci d'avance
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trudelmichel
Verified answer
(x+4)^2=x^2+8x+16
(y-3)^2=y^2-6y+9
(k+6)(k-6)=k^2-36
(3x+4=^2=9x^2+24x+16
(1-7x)(1+7x)=1-49x^2
(3x-8)^2=9x^2-48x+64
(10y+3)(10y-3)=100y^2-9
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Emilie97480
Il faut que tu utilise les identités remarquables .
( a + b ) * = a* + 2ab + b*
( a - b ) * = a* - 2ab + b*
( a - b ) ( a + b ) = a* - b*
Voila le début :
( x + 4 ) * = x* + 8x + 16
( y - 3 ) = y* - 6y + 9
( k + 6 ) ( k - 6 ) = k* - 36
je te laisse finir ;)
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Verified answer
(x+4)^2=x^2+8x+16(y-3)^2=y^2-6y+9
(k+6)(k-6)=k^2-36
(3x+4=^2=9x^2+24x+16
(1-7x)(1+7x)=1-49x^2
(3x-8)^2=9x^2-48x+64
(10y+3)(10y-3)=100y^2-9
( a + b ) * = a* + 2ab + b*
( a - b ) * = a* - 2ab + b*
( a - b ) ( a + b ) = a* - b*
Voila le début :
( x + 4 ) * = x* + 8x + 16
( y - 3 ) = y* - 6y + 9
( k + 6 ) ( k - 6 ) = k* - 36
je te laisse finir ;)