$x^2+21x+25$
$\left(2gh+3\right)^3$
$14x+2x-5y-4y$
$6\:sin\:4x\:sin\:5x\:$
$4c^2-12c+9$
$\left(x+1\right)\left(x+3\right)+\left(x-2\right)^2$
$\int\:inx^3dx$
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