$\int\frac{2x+6}{x^2+6x\:-\:27}dx$
$1.1^2$
$-50+65-1.600$
$cos\left(x+\frac{3\pi}{2}\right)=sinx$
$8x+3\ge11x-3$
$\frac{1+sin\theta\:}{1-sin\theta\:}=\frac{csc\theta+1}{csc\theta-1}$
$\tan\left(a\right)=0$
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