$\lim_{x\to3}\left(\frac{x^2-9}{\sqrt{3x-5}-\sqrt{x+1}}\right)$

$\left(x^2y^2\right)\left(x^4y^4\right)$

$\int\ln\left(8x^3+4\right)dx$

$y=-4\left(3x^2+3x\right)^2-4\left(3x^2+3x\right)$

$f\left(x\right)=3\left(1+x\right)^2$

$m^2+14m-32$

$\int_0^{\frac{\pi}{3}}\left(\frac{1}{1+senx}\right)dx$