$y'\left(x\right)\left(z\left(x\right)cos\left(y\left(x\right)\right)-3x\right)+\:z'\left(x\right)sin\left(y\left(x\right)\right)-3y\left(x\right)$

$5u'+tu=5t$

$8+-1+1$

$\lim_{x\to0}\left(\frac{x^2\cos\left(x\right)}{\sqrt{\sin\left(x\right)}}\right)$

$5\left(\frac{3}{5}\right)+3\left(\frac{4}{3}\right)$

$25a^2-10a+4$

$\left(x^3+3y^4\right)^5$