$\left(x^3-5x^2+1\right)\left(x^2-3x-3\right)$

$y'=8x\cdot\left(y+4\right)^2$

$5.3+2.6$

$-\frac{1}{6}ab+\frac{2}{5}ab-\frac{3}{4}ab+\frac{3}{8}ab$

$sin\left(2x\right)=3sin\left(x\right)$

$2x\cdot\left(x-3\right)+3\cdot\left(x^2-5\right)$

$\frac{d^2}{dy^2}\left(x\cdot\ln\left(x^2+e^y\right)\right)$