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Lohdagorn
@Lohdagorn
April 2019
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Factoriser: -3x^2-24x+27 ?
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slyz007
Verified answer
-3x²-24x+27=-3(x²+8x-9)
=-3(x²+8x+16-16-9)
=-3((x+4)²-25)
=-3((x+4+5)(x+4-5))
=-3(x+9)(x-1)
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Thanks 1
Lohdagorn
les reponses sont -3(x+4)^2+75 et (3-3x)(x+9) et à partir de -3(x^2+8x-9) je ne sais pas comment trouver les résultats ?
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Verified answer
-3x²-24x+27=-3(x²+8x-9)=-3(x²+8x+16-16-9)
=-3((x+4)²-25)
=-3((x+4+5)(x+4-5))
=-3(x+9)(x-1)