$\int\left(10x-6x^4\right)\sqrt{10x^2-\frac{12}{5}x^3}dx$

$2+2+5+1$

$2=\frac{3x-1}{x-2}$

$\lim_{x\to\infty}\left(\frac{8}{6^x}\right)$

$\left(3a-5b\right).\left(3a+5b\right)$

$\frac{1}{\sec\left(x\right)-1}-\frac{1}{\sec\left(x\right)+1}=2\cot^2\left(x\right)$

$\int2x^2\cdot\cos\left(x^3-2\right)dx$