$\left(6+4w\right)\cdot15$

$\left(+50\right)+\left(-45\right)-\left(85\right)-\left(-129\right)$

$\frac{\left(x+2\right)^9}{\left(2x-2\right)^8}$

$40c^2m+30b^3-20bm$

$\int\frac{\left(4x+3\right)}{\left(12x^3+3x\right)}dx$

$\cos\cdot\tan+1-\cos=\sin$

$\sin^2\left(x\right)-\tan\left(x\right)\cot\left(x\right)$