$\frac{\sin\left(x\right)}{\sec\left(x\right)+1}+\frac{\sin\left(x\right)}{\sec\left(x\right)-1}$
$\left(2x^3+5x^2-4x-5\right)\left(2x+1\right)$
$6z^2+3x-18$
$\left(c\cdot\frac{10}{5}\right)+35$
$n^2-8n+6$
$\int\left(3x^2\right)\sqrt{x^3}+2dx$
$16-2x+1$
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