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[tex] \left \{ {{( \sqrt{x} -3)(y-6)=0} \atop { \sqrt{x} +5y=8}} \right. [/tex]
[tex] \left \{ {{ \sqrt{4 x^{2} +7y+2}=4 } \atop { \sqrt{3 x^{2} +7y+2}=4 }} \right. [/tex]
[tex] \left \{ {{ \sqrt{x+y}=8 } \atop { \ \frac{ \sqrt{x+y} }{x}=4 }} \right. [/tex]
[tex] \left \{ {{( \sqrt{x} -3)(y-6)=0} \atop { \sqrt{x} +5y=8}} \right. [/tex]
[tex] \left \{ {{ \sqrt{4 x^{2} +7y+2}=4 } \atop { \sqrt{3 x^{2} +7y+2}=4 }} \right. [/tex]
[tex] \left \{ {{ \sqrt{x+y}=8 } \atop { \ \frac{ \sqrt{x+y} }{x}=4 }} \right. [/tex]
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Answers & Comments
((8-5y)-3)(y-6)=0
-5y^2 + 35y-30=0
D=25^2
y=6; y=1
x=9; x=484
3)√(x+y) = 8
√(x+y) / x =4
8/x=4
x=2
√(2+y) = 8
2+y=64
y=62
2)√(4x^2 + 7y +2) =4
√( 3x^2 +7y +2) =4
x^2 =0
x=0
√(4x^2 +7y+2) = 4
√(7y+2) = 4
7y+2=16
7y=14
y=2