$\left(4a^2b-2c\right)\left(2c+4a^2b\right)$

$\frac{1-x^8}{1+x^4}$

$\frac{\sin\left(x\right)-\sin\left(x\right)\cos\left(x\right)}{x\cos\left(x\right)}$

$\frac{da}{dt}=1.321-0.01a$

$\left(3x+8x\right)\left(8x-3x\right)$

$14.35\cdot1435$

$\int\frac{2.41}{x\left(x+2\right)}dx$