$8\cos\left(60\right)+\sqrt{3}\csc\left(60\right)$
$5ab+7b-12ab-5b$
$\left(1\:-2\:a+1\right)$
$\left(6x^4-5x^3-8x^2-x-6\right)\left(2x-3\right)$
$-\left(x+2\right)^2+4x+9$
$2\left(x+1\right)=x+6$
$-\:m-n+p\:-3n+4m+5p$
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