$4\left(1+a\right)^2-4\left(1+a\right)+1$
$2a-\left(-3a+4b\right)+\left(5a-2b\right)$
$-6\:+\:-1\:+\:-16$
$\frac{-4}{n+7}=\frac{4}{n-9}$
$\left(x-5\right)\left(x-7\right)=x^2-12x-35$
$\left(4h^2\cdot3h^3\cdot h\right)^3$
$\int2xf^{6x}dx$
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