$x^{10}-49y^{12}$
$\int\frac{\left(8x^3+9x+7\right)}{\left(x^7\right)}dx$
$ac+bc+ad+bd$
$1-2x>\left(x+5\right)^2-2\left(x+1\right)$
$\frac{7}{d}+\frac{1}{5}$
$x^2-14x+147$
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