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efectuati calculele
a) 2/√10+5√2/2√5-(2√5/√8+5√2/√125)


Răspuns :

2/rad10 = 2rad10/10 = rad10/5

5rad2/2rad5 = 5rad10/10 = rad10/2

2rad5/2rad2 = 2rad10/4 = rad10/2

5rad2/5rad5 = rad10/5

rad10/5 + rad10/2 - rad10/2 - rad10/5 = 0