$x^2\cdot z''\left(x\right)-xy\cdot z''\left(y\right)=z-y$

$6\pi+14$

$-62+\left|56\right|+\left|47\right|$

$\frac{\left(5x^3-2x+3\right)}{\left(x+2\right)}$

$\left(\frac{x^{p+q}}{x^{p-q}}\right)^{p+q}.\left(\frac{x^{p-q}}{x^{p+q}}\right)^{p-q}$

$2\left(-2x\right)\left(2\right)$

$20x^2-11x-3$