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daca x =3 si y+z=10,calculeaza a)7ori x+7xy+7xz b) 17ori x+17ori y+17xz-10 c)5ori x+10ori y+10ori z d)100ori x-)9oriy+9ori z)

Răspuns :

daca x =3 si y+z=10,calculeaza a)7ori x+7xy+7xz b) 17ori x+17ori y+17xz-10 c)5ori x+10ori y+10ori z d)100ori x-)9oriy+9ori z)