elimination is usually done with linear equations. Using substitution,
x = 2y-3, so we have
(2y-3)^2 + 9y^2 = 37
4y^2 - 12y + 9 + 9y^2 = 37
13y^2 - 12y - 28 = 0
(y-2)(13y+14) = 0
x^2 + 9y^2 = 37
x - 2y = -3
simultaneous equation by elimination
2 answers
(9y2+x2y)(9y2-x2y)