$+7a^3b^4+12\cdot2+6a^3b^4-11y^3+5x^2$

$\left(\cos\left(\pi x\right)+\sin\left(\pi y\right)\right)^4$

$-6x^5y^3\left(3x^2y-4xy^4-2x+3\right)$

$\left(m+9\right)^3$

$\lim_{x\to0}\left(\frac{8e^{x^2}}{x^2}\right)$

$\int\frac{\left(5x+3\right)}{x^2+4}dx$

$\lim_{x\to6}\left(\frac{\sin\left(2x-6\right)}{x-6}\right)$