$y=8\sqrt{x};\:x=9,\:x=16$

$\left(4+\left(8-\left(5-2\right)+\left(7-3\right)\right)+\left(\left(-3\right)-\left(-8\right)+13\right)\right)$

$\frac{\left(x^5+3x^4-6x^3+2x^2-9x+6\right)}{\left(x+2\right)}$

$3\cdot\frac{\left(5-1\right)}{\left(6-2\right)}$

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

$\left(-\frac{2a^3b^2c^0}{3a^2b^3c^7}\right)$

$\frac{d}{dx}\:z+2y-3x-lnz$