Math
posted by Princess .
x^2 + 9y^2 = 37
x  2y = 3
simultaneous equation by elimination

elimination is usually done with linear equations. Using substitution,
x = 2y3, so we have
(2y3)^2 + 9y^2 = 37
4y^2  12y + 9 + 9y^2 = 37
13y^2  12y  28 = 0
(y2)(13y+14) = 0