$\sin\left(x\right)\frac{\left(\csc\left(x\right)-\sin\left(x\right)\right)}{\tan\left(x\right)}$

$\log_{17}\left(-5v-6\right)=\log_{17}\left(14\right)$

$\int\frac{sin\left(t\right)}{\sqrt{cost}}dt$

$21-+-42$

$x^2+\frac{1}{2}x+\frac{1}{16}=\frac{4}{9}$

$\int\frac{1}{3x^2+6x+78}dx$

$\:-6+9x+1+3x$