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soo1233
@soo1233
December 2020
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bonjour quelqu’un pourrait m’aider à faire cette exercice s’il vous plaît,je n’arrive pas à comprendre,merci beaucoup d’avance !
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homeworks123
Réponse:
a. 2(x+5)=2x+10
b. 3x(2x-5)= 6x^2 - 15x
c.5x-(3x-5)=5x-3x+5=2x+5
d.3x+2x(4x-3x)=3x+8x^2-6x^2=3x+2x^2
ex4
A=(2x+3)(x+6)=2x^2+12x+3x+18=2x^2+15x+18
B=(4x-5)(3x-1)=12x^2-4x-15x+5=12x^2-19x+5
C=(2-x)(5+x)=10+2x-5x-x^2=10+3x-x^2
D=(3x+1)(2x-3)=6x^2-9x+2x-3=6x^2-7x-3
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Réponse:
ex4