$\left(x+6\right)^2-\left(x+8\right)^2+4x+37$

$2\:.\:-1\:.-3\:.\:4\:.\:-2$

$\int\:\left(4x^2-2x+3\right)^2\left(-4x-1\right)dx$

$\frac{\sec\left(x\right)-\csc\left(x\right)}{\tan\left(x\right)+\cot\left(x\right)}$

$\lim_{x\to-4}\left(x^3+x^2-x-1\right)$

$\int\left(x^2\sqrt{5-2x^3}\right)dx$

$5d+7d$