$x^2+2ax+a^2.ax^2+bx$

$y'=\frac{2xy-y^2}{2xy-x^2}$

$\left(9p^{4}+7p\right)\left(5p^{3}+9x\right)$

$2^2+82-10$

$\left(x+5^2\right)^2\:-\left(x+4\right)^2\:-\left(x-3\right)^2\:+\left(x-4\right)^2$

$x^2+10x+8x$

$\left(-2\right)\left(8\right)\left(-6\right)\left(1\right)$