$\tan\left(x\right)+\frac{\csc\left(x\right)}{\sec\left(x\right)\left(\csc\left(x\right)+1\right)}=\sec\left(x\right)$

$\int\left(12x-7\right)sen\left(6x^2-7x+2\right)dx$

$-2\log_{1.4}\left(3\right)$

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

$x^2-10x\ge0$

$mn^{3}-m^{3}n$

$\int_0^{2\pi}\frac{1}{5-4\cos\left(x\right)}dx$