$\sin\left(x\right)\cdot\sin\left(2x\right)+\sin^2\left(x\right)=0$

$105\cdot40$

$4^x+2^x-6=0$

$3\infty+1$

$\left(3x^2y-2x^2z\right)^3$

$\tan\left(60\right)-\sec\left(30\right)+\csc\left(45\right)$

$\frac{\left(2sec^{\left(\frac{7}{2}\right)}x\right)}{7}-\frac{\left(2sec^{\frac{3}{2}}x\right)}{3}$