$4b^2+40b+100$

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

$\int\frac{25\left(1+tan^{-1}x\right)}{1+x^2}dx$

$\frac{\left(5\right)\left(21\right)^6}{\left(3\right)^4\left(7\right)^5}$

$x^3+y^3=y'\left(x\right)$

$\cos\left(10\right)=\frac{b}{9}$

$\left(y+x^2y\right)dy=\left(xy^2-x\right)dx$