$6cosx^2=2sinx+2$
$5-4x-2x^2$
$2x+4=-x+19$
$126-234-200$
$x^2-2x-5=3$
$\lim_{x\to\infty}\left(\sqrt{x^2-\sin\left(x\right)+1}-\sqrt{x^2-\cos\left(x\right)+1}\right)$
$-9+-2+-4\cdot6$
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