$7\left(-9m+6\right)$

$\int\tan^4\left(x+1\right)dx$

$\lim_{x\to infinity}\left(\frac{2^x\left(-\frac{1}{2}\right)^x}{x}\right)$

$-37-\left(-50\right)+\left(-15\right)+27$

$12x^2-120xy+100y$

$\frac{x^2+13x+40}{x^2+10x-25}\cdot\frac{x+5}{x-4}$

$\left(3x^2\right)\left(4x^4\right)$