$\lim_{x\to1}\left(\frac{4x^3-3x^2}{2x-1-x^2}\right)$

$\int\left(3t-2\right)^8dt$

$\frac{\tan\left(x\right)\sec\left(x\right)}{\csc\left(x\right)}=\tan^2\left(x\right)$

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

$\left(3x+5a\right)\left(3x-5a\right)$

$16m^4+24m^2+9$

$\frac{\sin^2-\cos^2}{1-\sin^2}$