$4x^2+17x-15$
$4\left(1+9x\right)$
$x-7=-7$
$64\:=\:b\left|8\right|$
$\int\frac{x^5-4x^3}{\left(x+2\right)^3}dx$
$x^2+2x+7=0$
$4x+2+5x+12$
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