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GeorgeFTW
a fost răspuns

Sistem de ecuatii:
x+y=13
2√x+3√y=13.
Vreau doar pasii.

Răspuns :

Casiniachilari
x+y=13 ; 2√x+3√y=13 rez y=13-x ;2RDx +3 rd 13-x rez 
Albatran
√x=u
√y=v

u²+v²=13
2u+3v=13
 u=(13-3v)/2

(169-78v+9v²)/4+v²=13
169-78v+9v²+4v²=52
169-78v+13v²=52
13-6v+v²=4
v²-6v+9=0
(v-3)²=0
v=3
√x=3
x=9
y=13-9=4

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