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CAT DA X+10=5 LA PUTEREA LUI 1995?

Răspuns :

x+2*5=5^1995
x=5^1995-2*5
x=5(5^1994-2)
x+10=5la1995
x+2x5=5la1995
x=5la1995-2x5
x=5(5l1994-2)