Input:
solve(x^2+4x+a)
Write:
`solve(x^2+4x+a)`
Output:
$$solve({x}^{2}+4\ x+a)== \frac{1}{2}\ (-4+\sqrt{16-4\ a})\ and\ \frac{1}{2}\ (-4-(\sqrt{16-4\ a}))$$
Result: $$\frac{1}{2}\ (-4+\sqrt{16-4\ a})\ and\ \frac{1}{2}\ (-4-(\sqrt{16-4\ a}))$$
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