Răspunsuri

2014-07-16T12:35:13+03:00
2√5 * [ (5-4√5+4) +3√5-3] -6(5+2√5+1)=

2√5 *(9-√5-3) -36-12√5=

2√5 *(6-√5) -36 -12√5=

12√5 -10-36 -12√5= -46