Question

2x/x-3 = 4/3 e 2/y = 6/15, então (x)^(2) + (y)^(2) e igual a: ???

Answer 1

2x/x-3 = 4/3 e 2/y = 6/15, então (x)^(2) + (y)^(2)

 2x = 4 ==> 6x = 4x - 12 ==> 6x-4x = - 12 ==> 2x = - 12 ==> x = - 6 
x-3    3
======================================================
2 =  6  ==> 6y = 30 ==> y = 5
y    15
======================================================
(x)^(2) + (y)^(2) ==> (-6)^(2) + (5)^(2) ==> 36+25 ==> 61