$\left(j+k\right)^2-\left(j-2k\right)^2-\left(j-k\right)^2$

$\int\:\left(\frac{10\sqrt{x}}{1+x^{\frac{3}{2}}}\right)dx$

$2\pi^2\cos\left(2\pi x\right)+4\pi^2y=2\pi^2$

$4,834+0.456$

$\log\left(\frac{x+1}{2+x}\right)$

$\lim_{x\to\infty}\left(x^3-\sqrt{x^6-1}\right)$

$5x^4-3x^4+\frac{2}{3}x^4$