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Sagot :

bonjour

a) 2m(m-1)-3(2m+6)=2m²-2m-6m-18=2m²-8m-18

b) 3( 2x-1) +5( 5x+7)= 6x-3+25x+35=31x+32

h)10 − 4(6 – 3z) + 10z =10-24+12z+10z=22z-14

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