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Afla valorile a,c,d care se vor insuma


a×c=6

c×c=d

d×d=16

a+b+c=?​


Răspuns :

a×c=6

3×2=6
_________

c×c=d

2×2=4
_________

d×d=16

4×4=16

_____________

a=3

c=2

d=4

a+d+c=3+2+4=9