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Sagot :

ASMADAHBAR123

Explications étape par étape:

a.x=2 y=1

x×4 = 1×2+(1+4)×2

=2×4 =2+5×2

=8 =2+10

=12

b.x=3

=3×4

=12

c.x=6

=6×4

=24

y=3

=3×2+(3+4)×2

=6+7×2

=6+14

=20

d.x=10

=10×4

=40

y=7

=7×2+(7+4)×2

=14+11×2

=14+22

=36

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