2X²+Y=15
3X+9Y=1, Solve for X and Y.
well, since y=15-2x^2, just solve
3x+9(15-2x^2) = 1
18x^2 - 3x - 134 = 0
now just use the quadratic formula
3X+9Y=1, Solve for X and Y.
3x+9(15-2x^2) = 1
18x^2 - 3x - 134 = 0
now just use the quadratic formula