$-3+\left(-5\cdot2+10-3\right)$

$\frac{\left(-1\right)^n\cdot n}{2^{2n-1}}\cdot\left(x+3\right)^n$

$3+\left(-12\right)+\left(-108\right)+1$

$\sin\left(-\frac{\pi}{6}\right)\cos\left(\frac{\pi}{5}\right)+\cos\left(\frac{\pi}{6}\right)\sin\left(-\frac{\pi}{5}\right)$

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

$\frac{dx}{dt}=30-4x$

$14x^2-56$