$x^2-53x+196$

$\left(-\frac{1}{2}\left(-\frac{51}{571}-\frac{311}{250}\right)-\frac{2}{3}\right)+\left(\frac{\sqrt{3}}{2}\left(-\frac{51}{571}+\frac{311}{250}\right)\right)i$

$b\left(1+x\right)+x^{2}+1$

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

$\left(3x+5a\right)\left(3x-5y\right)$

$9x^2-6x-80$

$x^{10}-y^8$