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Sagot :

GGDU19

Bonjour,

1)

7-5 = 2

2*4 = 8

8-3*7 = 8-21 = -13

2)

a)

h(x)=4(x-5)-3x

b)

h(-11)=4(-11-5)-3*(-11)

      =4(-16)+33

      =-64+33

h(-11)=-31

c)

h(x)=4 <=> 4(x-5)-3x=4

          <=> 4x-20-3x=4

          <=> x=4+20

          <=> x=24

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