$\int6x\left(x^2+2\right)^{10}dx$

$\left(\frac{3a}{4}+\frac{7}{5}\right)\left(\frac{3a}{4}-\frac{7}{5}\right)$

$\lim_{x\to\infty}\left(\cos\left(\frac{\pi}{6x}\right)\right)$

$\int\left(-45\right)x^4e^{-9x^5+\left(-32\right)}dx$

$100a^2b^3c-150ab^2c^2+50ab^3c-200abc^2$

$-\left(-400\right)-300-250$

$\left(12m^3-7n^4\right)\left(12m^3+7n^4\right)$