Răspunsuri

2014-09-24T00:26:54+03:00
Radical(68^2-32^2)=radical[(2^2*17)^2 -(2^5)^2]=
radical[2^4*17^2- 2^10]=
radical[2^4(17^2-2^6)]=
radical[2^4(289-64)]=
radical[2^4*225]      =
radical[2^4*15^2]     = 2^2*15=60
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