$\left(-9b^4\right)\left(-3x^4y+7c^4x+8bx-6b^4y^5\right)$

$1mxy^2-54m^2x^2y^2+36my^2$

$1024x^2+1152x+324$

$\frac{d}{dx}x^3e^{\sqrt{x}}$

$-64+25y^2=25y^2-64$

$\frac{d}{dx}\left(\frac{\left(\left(7x-4\right)\left(3x+5\right)^{\frac{1}{2}}\right)}{8x-6}\right)$

$\left(7-10\right)\cdot\left(-3\right)$