Input:
x^2 +y^2=4 and x^2 +y^2=1
Write:
`x^2 +y^2=4 and x^2 +y^2=1`
Output:
$${x}^{2}+{y}^{2}=4\ and\ {x}^{2}+{y}^{2}=1== {x}^{2}+{y}^{2}=4\ and\ {x}^{2}+{y}^{2}=1$$
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