$\left(+88\right)-\left(-3\right)$
$-5\left|6-5\right|$
$16v^2-9$
$3x+25,25>2x+30,45$
$\frac{36x^2-9}{6x+3}$
$a^4+6a^2+9$
$\lim_{x\to\infty}\:x-\sqrt{x^2-4}$
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