$\frac{x}{2}+3y+5=0$
$-\:6\:+\:7\:-\:8\:-\:5\:+\:12\:-\:17$
$\int y\left(a+by^3\right)^2\:dy$
$3k^2-5k$
$cos\left(-x\right)+sin\left(-x\right)=cos\left(x\right)-sin\left(x\right)$
$\:3secxtanx-5csc^2x$
$-1^3+2.-1-2$
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