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Kara33
a fost răspuns

Calculati:
b)Daca a=3,b=c=11,b-c=8 calculati ab=ac si ab-ac
c)Daca a=5 si b+c+d=25 calculati ab+ac+ad
d)Daca a=2 si b+c+d=17 calculati 5a+3(ab+ac+ad)

Răspuns :

Gandac
b)
a=3
b=c=11
b-c=8
ab=ac
3×11=3×11
33=33
ab-ac
33-33=0
c)
a=5
b+c+d=25
ab+ac+ad=
a(b+c+d)=5×25=125
d)
a=2
b+c+d=17
5a+3(ab+ac+ad)=
ab+ac+ad=
a(b+c+d)=
2×17=34

5×2+3×34=
10+102=112

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