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Radacina patrata din:
a) 23x3+23x18
b) 25x17+8x25


Răspuns :

a) a= 23(5+18) = 23x23= 23^2 si rad a = 23
b) b=25(17+8) = 25^2, rad b = 25

Succes in continuare!


√(23(18+3)=√23*21=√(3*7*23)=√483 ∈R\Q, asa ramane, trei fractori prin mi la puterea 1

daca e 23x5+23x18
a tunci
√(23(5+18)=√(23*23)=√23²=23∈N



 si la al doilea avem

√(25(17+8))=√25*25=√25²=25∈N