$\cos\left(x\right)\cdot\tan\left(x\right)\cdot\cot^2\left(x\right)=\csc\left(x\right)$

$6ab-12a^3b^3+8ab+14a^3b^3$

$4cos^2\left(\frac{3\pi}{4}\right)-3sin^2\left(\frac{3\pi\:}{4}\right)$

$\int_0^2\frac{4x^2}{\sqrt{7+x^2}^{\frac{3}{2}}}dx$

$\lim_{x\to0}\left(9x\ln\left(4x\right)\right)$

$125x^9-64y^{15}$

$2x^4-15x^3+38x^2-39x+18$