$2-\left[-2\left(x+1\right)-\frac{x-3}{2}\right]<\frac{2x}{3}-\frac{-5x-3}{12}+3$
$\left(x-a\right)^2-\left(x+a\right)^2$
$3x^2-x-1$
$x^{2}+7x+10<0$
$y+4+2y$
$\left(a^2-a+b^2\right)\left(a^2+ab+b^2\right)$
$y'+e^{-4x}=0$
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