selesaikan sistem persamaan berikut x2+y2=7 x.y=3

x²+y²=7⇒x²=7-y²
x.y=3⇒x=3/y
x²=27/y²
27/y²=7-y²
27=7y²-y∧4
y∧4-7y²+27=0
-b +- √(b²-4ac)/2a=7+ √(49-108)/2=


7/2+√59/2