Question

cum se calculeaza radical din 47 - radical din 2013. adica un radical sub un radical daca ati putea explica ar gi perfect

Answer 1

formula radicalilor compusi
√(47-√2013) =√{[47+√(47²-2013)]/2}-√{[47-√(47²-2013)]/2}=
=√{[47+√(2209-2013)]/2}-√{[47-√(2209-2013)]/2}=
=√[(47+√196)/2]-√[(47-√196)/2]=
=√[(47+14)/2]-√[(47-14)/2]=
=√(61/2)-√(33/2)