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Sagot :

ASIYA38

a) (x+2)(y+3)

= xy + 3x + 2x + 6

 

b) (a+5)(7+b)

= 7a + ab + 35 + 5b

 

c) (4a+2)(1+5b)

= 4a + 20ab + 2 + 10b

 

d) (6y+1)(9+x)

= 54y + 6xy + 9 + x

 

voici les réponses :)

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