Minus 243 (-243)
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x2 - 3x + 2 = 0
all you do is subtract the 3x from both sides and you get:y = -3x + 12
If you mean: -3x+9y = -6 then it is y = 1/3x-2/3
3x^-2 -3x^2 is not a quadratic equation because it does not take the form ax^2 +bx+c.
3x = 2y + 3 3x -3 = 2y +3 -3 3x - 3 = 2y (3x -3)/2 = 2y / 2 y = 1/2 x (3x - 3) 3x = 2y +3 3x - 3x = -3x +2y +3 0 = -3x +2y +3 -1 x (0) = -1 x (-3x +2y +3) 0 = 3x - 2y -3