$2x+9>3x$
$\int_0^{\frac{x}{2}}\left(\frac{2sin\left(2t\right)}{8-cos\left(2t\right)}\right)dt$
$\frac{cos\:x+sin\:x}{cos\:x-sin\:x}=\frac{1+sin\:2x}{cos\:2x}$
$7\:=5+\frac{x}{4}$
$5ax+10x^3+35x^2+x^4+24+1$
$x^2-20x+41$
$-3\frac{1}{4}x\left(-2\frac{3}{5}\right)$
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