$\int\sec^3\left(7x\right)dx$
$558\cdot513\cdot1465$
$49-14z-z^2$
$\left(-x-6\right)^2\left(x^2-12x+36\right)^2$
$\frac{2x-3}{5}-3x\ge\frac{8x+1}{6}-7x$
$x^2+18x+-18$
$-7x^5-2x^4$
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