$7\cdot\sqrt[3]{a^2\cdot b^2}\cdot\sqrt[4]{3a^3b}$

$-5c-7c$

$3y^2\left(m-5\right)+9y\left(5-m\right)-27\left(m-5\right)$

$m^2-2m-528$

$\left(\sqrt{3\left(12\right)}\right)-\left(\sqrt{3\left(3\right)}\right)$

$2\sin^2\left(z\right)-1=-\sin^4\left(z\right)+\cos^4\left(z\right)$

$29+\left(-332\right)+1611$