$3sin^2x-sinx-1=0$
$\frac{sec\left(x\right)}{tan\left(x\right)}-\frac{tan\left(x\right)}{cot\left(x\right)}$
$\ln x-\ln\left(x+1\right)=0$
$36x^2+99x+81$
$\frac{1}{4}x=2$
$\int ln\left(x-6\right)dr$
$x\:+\:6-6x\:+\:10$
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