$3\left(-5\right)\left|\left(8+\left(-3\right)\right)\right|$

$\left[\left(\frac{3}{2}\right)^6:\left(\frac{3}{2}\right)^4\right]^{-1}$

$\frac{dz}{dt}+4e^{t+2}=0$

$-x^2-5x+4$

$\lim_{x\to1}\frac{\left(1-x^2\right)}{\sin\left(\pi x\right)}$

$\int\left(-5\sec^2x\right)dx$

$-5y+x+6y-8x$