$1+x\left(4x-4\right)$
$\frac{2x}{3}=10$
$\lim_{x\to+\infty}\left(x^2-\log_e\left(x\right)\right)$
$360+30$
$\left(b+\frac{5}{2}\right)^2$
$\frac{\left(\cos\:\left(\pi\:-x\right)-\cos\:\left(-x\right)\right)}{\sin\left(-x\right)}$
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