$\left(\frac{2}{3}x^3y+\frac{3}{2}x^2^2\right)$
$\sin^247^{\circ}+\cos^277^{\circ}=2$
$\lim_{x\to1}\left(\frac{\sqrt{25-x^2}-5}{x}\right)$
$2|x|\:\sqrt{2}\cdot2|x|\sqrt{14}$
$\frac{cot^2\left(x\right)}{cot^2\left(x\right)+1}=cos^2\left(x\right)$
$-7\cdot2+-8\cdot5$
$\lim_{x\to\infty}\left(1+\frac{4}{x}\right)^{\frac{x}{3}}\cdot$
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