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a fost răspuns

Dati factor comun la urmatoarele expresii

15a-7a ;
6x+6y-6y ;
50a-25a ;
3x+5x-2x ;
12a-16b ;
18x12z +24t

Răspuns :

15a-7a=a(15-7)=8a
6x+6y-6y=6(a+y-y)=6a
50a-25a=a(50-25)=25a
3x+5x-2x=x(3+5-2)=6x
12a-16b=4(3a-4b)
18x12z+24t=3(6x4z+24t)=3*24(xz+t)=72(xz+t)

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