$\tan\left(x\right)=-2019$
$2\sqrt{2}\cos\left(w\right)+3=5$
$-4r-2r+5$
$\left(2\right)\left(-5\right)\left(-2\right)\left(4\right)\left(-1\right)\left(6\right)\left(9\right)$
$\left[\left(\sqrt{x}-1\right)\left(\sqrt{x}+1\right)+1\right]^2-\sqrt{\left(x-1\right)^4}+1$
$x^6+12x^3+36$
$\lim_{x\to\infty}\left(\frac{8x-5}{\sqrt{4x^2+3}}\right)$
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