$\lim_{x\to0}\left(\frac{10e^x-10}{x^2}\right)$
$1-cos^2x=3cos^2x$
$sin\frac{3}{4}x-1=0$
$\frac{dy}{dx}\left(\left(x^2+y^2\right)^2=8xy^2\right)$
$3x+11<5$
$10-2x+2y$
$\left(3y+3a\right)^2$
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