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Stess59
@Stess59
April 2019
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Bonsoir, est-ce que quelqu'un pourrait me développer ces deux expressions svp j'ai essayé mais je ne suis pas sur. (soyez sur de vos réponses svp c noté)
A=(-10x+1) (4x-9)
B= (2x+5) (-x+2) - (x-3) (-3x+4)
Merci d'avance
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droopette
A=(-10x+1) (4x-9)
=-40x²+90x+4x-9
=-40x²+94x-9
B= (2x+5) (-x+2) - (x-3) (-3x+4)
=-2x²+4x-5x+10-(-3x²+4x+9x-12)
=-2x²+4x-5x+10+3x²-4x-9x+12
=x²-14x+22
1 votes
Thanks 1
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=-40x²+90x+4x-9
=-40x²+94x-9
B= (2x+5) (-x+2) - (x-3) (-3x+4)
=-2x²+4x-5x+10-(-3x²+4x+9x-12)
=-2x²+4x-5x+10+3x²-4x-9x+12
=x²-14x+22