$\int\frac{2}{3}x^5\ln\left(9x\right)dx$

$\sec\left(x\right)\left(\sec\left(x\right)-\csc\left(x\right)\right)\cdot\csc\left(x\right)\left(\csc\left(x\right)-\sin\left(x\right)\right)$

$f\left(x\right)=x^4-x^3-14x^2+24x$

$sec^4x-2sec^2x+1=\left(sec^2x-1\right)^2$

$\cos\left(2x\right)+4\sin\left(x\right)=3$

$4x-8=12+6x$

$\left(\frac{4my^{2}}{35^{3}}+2\frac{2x^{2}}{5}\right)$