$\int\left(5x^2+1\right)\left(5x^3+3x-8\right)^8dx$

$\tan\left(x-43\right)=92$

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

$5x^2\cdot8x$

$\int\sqrt{36-64x^2}xdx$

$\lim_{x\to\infty}\left(\frac{ln\left(1+x\right)}{x}\right)$

$3\left(2x+3mn+1\right)<4\left(3x+4mn\right)$