Input:
oval(2,1,-3,0) and circle(1,-3,0) and oval(2,1,3,0) and circle(1,3,0)
Write:
`oval(2,1,-3,0) and circle(1,-3,0) and oval(2,1,3,0) and circle(1,3,0)`
Compute:
$$oval(2,1,-3,0)\ and\ circle(1,-3,0)\ and\ oval(2,1,3,0)\ and\ circle(1,3,0)$$
Output:
$$oval(2,1,-3,0)\ and\ circle(1,-3,0)\ and\ oval(2,1,3,0)\ and\ circle(1,3,0)== -1+\frac{1}{4}\ {(3+x)}^{2}+{y}^{2}\ and\ -1+{(3+x)}^{2}+{y}^{2}\ and\ -1+\frac{1}{4}\ {(-3+x)}^{2}+{y}^{2}\ and\ -1+{(-3+x)}^{2}+{y}^{2}$$
Result: $$-1+\frac{1}{4}\ {(3+x)}^{2}+{y}^{2}\ and\ -1+{(3+x)}^{2}+{y}^{2}\ and\ -1+\frac{1}{4}\ {(-3+x)}^{2}+{y}^{2}\ and\ -1+{(-3+x)}^{2}+{y}^{2}$$
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