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

$\int\left(\frac{\left(x\right)}{\left(1-x^2\right)^3}\right)dx$

$\int axdx$

$\int_1^5\left(100-e^{-\frac{x}{10}}\right)dx$

$\left(5a+b\right)\left(25a^2-5ab+b^2\right)$

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

$25m^2-10m+1$