$x\left(6x^2-x+7\right)$
$x^2-x+56$
$7x^2-2x=10$
$-x^2+42x-440$
$x+5=2x-2$
$\int\cos\left(2x-\pi\right)dx$
$a-3b+6c-5a-6c+10b$
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