$3\cdot\sin^2\left(x\right)-4\sin\left(x\right)-4=0$

$+\:\left(-6\right).\left(-11+\left(-7\right)\right)-6$

$\lim_{x\to0}tan\left(x\right)sec\left(x\right)$

$\int\:4r\:e^{3r}dr$

$\left(\frac{1}{4}x+\frac{2}{3}x\right)^2$

$\frac{dy}{dx}=\left(\frac{\left(2xy\right)}{ln\left(y\right)}\right)$

$a^2+33-149$