$7ab-3a^2+4b^2+8a^2-4ab-10b^2$

$\lim_{x\to\infty}\left(\frac{1\:+\:\sin\left(\frac{\pi}{n}\right)}{1\:+\:\tan\left(\frac{\pi}{n}\right)}\right)^{n^3}$

$xp-\frac{x}{\left(s-xyg\right)}\}$

$\sin^2\left(x\right)+\cos^2\left(x\right)+x=10$

$\lim_{x\to-1}\left(\frac{\ln\left(5x+6\right)-5x-5}{\left(x+1\right).\sin\left(4x-4\right)}\right)$

$\int x^3\cdot\sqrt{3x^2+4}dx$

$\frac{sin\left(-x\right)}{1-cos\left(-x\right)}=-cscx-cotx$