$4 x ^ { 2 } - 3 x + 5 x ^ { 2 } + 2 y - 3$
$\frac{1-2x}{x+2}\le-2$
$-3x^2-\:-3x^2-\:-3x^2$
$\int x^2\sqrt{x+a}dy$
$22x-20>40-8x$
$1+\frac{\cos\left(2a\right)}{\cot\left(a\right)}$
$w^2-9w+18$
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