bonsoir,
. a) 3 (5+x)
= 15+3x
b) 7 (x - 8)
= 7x -56
c) 10 (y + 9)
=10y +90
d) x(6 - x)
= 6x -x²
Réponse :
a) 3 (5+x)
3X5+3Xx
15+3x
b) 7 (x-8)
7Xx-7X8
7x-56
c) 10 (y+9)
10X y +10X9
10y + 90
d) x (6-x)
xX6 -xXx
6x - x*2
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bonsoir,
. a) 3 (5+x)
= 15+3x
b) 7 (x - 8)
= 7x -56
c) 10 (y + 9)
=10y +90
d) x(6 - x)
= 6x -x²
Réponse :
a) 3 (5+x)
3X5+3Xx
15+3x
b) 7 (x-8)
7Xx-7X8
7x-56
c) 10 (y+9)
10X y +10X9
10y + 90
d) x (6-x)
xX6 -xXx
6x - x*2