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Efectuati folositi factorul comun(a+b)x(b+c)x(c+a)-(a+b)x(b-c)x(a+c)

Răspuns :

(5+5)x(5+5)x(5+5)-(5+5)x(5+5)x(5+5)=10x10x10-10x10x10=100x10-100x10=1000-100=0
sper ca team ajutat imi dai coronita?