$\int_0^{\pi}\left(6\sin\left(2x\right)\cdot\sqrt{20\cos^2\left(2x\right)+16}\right)dx$

$y\ln\left(x\right)\ln\left(y\right)dx+xdy=0$

$\left(5b-1\right)\left(5b+3\right)$

$7.6-3.268$

$\left(\frac{5}{81}x-\frac{8}{11}yz\right)\left(\frac{5}{81}x+\frac{8}{11}yz\right)$

$x^2+4x+250$