\left\{ \begin{array} { l } { \frac { 0.45 } { 2 } \times \frac { ( 1.2 - 0.48 - y ) ^ { 2 } } { 1.2 - 0.48 + 0.45 } = 3 \times [ ( x - 0.48 ) y - \frac { 1 } { 2 } y ^ { 2 } ] } \\ { x = 2.88 y - 0.154 } \end{array} \right.
Solve for y, x
x=-\frac{27\sqrt{25403521}}{282250}+\frac{103201}{564500}\approx -0.299325582\text{, }y=\frac{10563-3\sqrt{25403521}}{90320}\approx -0.050460271
x=\frac{27\sqrt{25403521}}{282250}+\frac{103201}{564500}\approx 0.664962428\text{, }y=\frac{3\sqrt{25403521}+10563}{90320}\approx 0.284361954
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