$-12x+12x-5$
$c^2-16c-7$
$\frac{\cos\left(x\right)}{\sec\left(x\right)-\cos\left(x\right)}$
$\left(30x^3-31x^2-25x+6\right)+\left(15x^2+7x\right)$
$xp\frac{1^x}{1-2^x}$
$x^5+x^8$
$-11\cdot35$
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