$-1-1-4$
$\:\left(8x+8\right)$
$30+2ab=36$
$7-3x=-26$
$\int\frac{6x^2+1}{\left(x^2-4\right)^2}dx$
$4x^2-2\cdot\sqrt{3\cdot x}+1$
$\frac{a^{12}}{a^7}$
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