Question

3 Dacă a=3, b-c=8 şi d=1, atunci S=a +3ab-3ac+d? are valoarea: A) 200 B) 100 C) 82 D) 103 E) 150​

Answer 1

Răspuns:

S=a+3ab-3ac+d=a+3a(b-c)+d=3+3•3•8+1=3+72+1=76