$\sin\left(x\right)+\sin\left(x\right)\cos\left(x\right)=0$

$\int_3^1\left(\frac{\left(5t^3-4t\right)}{t^4-16}\right)dt$

$\lim_{x\to0}\left(\left(\frac{4}{x}\right)^{6x}\right)$

$\left(b-d\right)\left(c-d\right)$

$-61-121$

$\left(x+9\right)^5$

$\left(\frac{8}{5}x^2-\frac{3}{4}\right)\left(\frac{8}{5}x^2+\frac{3}{4}\right)$