$\frac{csc\:b}{sin\:b}-\frac{cot\:b}{tan\:b}=1$
$2\log\left(x\right)-\log\left(3\right)=12$
$6\left(-60\right)$
$2a-2b-5b+9a$
$25x^7-10x^5+15x^3-5x^2$
$3-\frac{18-6}{4}$
$\sqrt{252m^4}nx^5$
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