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Sagot :

Réponse:

B=(-5x+2)(7x+6)+(-5x+2)x

=(2_5x)(7x+6+x)

=(2-5x)(8x+6)=2(2_5x)(4x+3)

D=(2x+5/2)(-2/3x+8)+(x+5)(2x+4)

=(x+2)(2x+5/2-1/3+x+5)

=(x+2)(3x+13/6)

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