$4x^2-40x+400$
$x^2-14x+45$
$\int\left(\frac{ln^2t}{t}\right)dx$
$287-579+753-978-897$
$\int-30x^2\cos\left(5x^3+2\right)dx$
$2\cdot200$
$3^{6\cdot2}\cdot5^{4\cdot2}$
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