$4\sin\left(x\right)-5=-6$

$\sqrt{1+2x}dx=3\sin\left(3y\right)dy$

$\left(6y^5+1\right)\left(6y^5-1\right)$

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

$\lim_{x\to\frac{\pi}{2}}\left(8\cos\left(-5x\right)\sec\left(-7x\right)\right)$

$\left(x+1\right)\cdot6\left(x-1\right)$

$y=\frac{x^3}{3}-x^2-3x+5$