$-1-\left(2-5\right)+\left(7-4\right)$
$\int\sqrt{\left(3-2x-x^2\right)}dx$
$\left(x+v\right)^3$
$-8t^2+7t-9$
$\left(4x+6y\right)\left(4x-14y\right)$
$\frac{5x^2-2x^2-3}{x-1}$
$-5b-7b-10b$
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