$\lim_{x\to-\infty}\left(ln\left(-x\right)^2+4x\right)$

$\cot^2\left(y\right)\left(1-\sin^2\left(y\right)\right)=\cot\left(y\right)^2-\cos\left(y\right)^2$

$-\frac{0.1}{-15}$

$3 n + 2 ( - 2 n - 1 )$

$\int5x^4\left(x^5+8\right)^2dx$

$3\sqrt{8a}-5\sqrt{2a}+2\sqrt{32}-\sqrt{128a}$

$2x^2-6x-36$