$x^2+5x-2\cdot4x+3$
$3n-1>8$
$x\cot^22x^2$
$\left(5x^3y^2+x^2\right)$
$x^2-11x-34$
$25x-15+4x+5$
$\left(t^9u^6\right)^1$
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