$\log\left(y\right)=2\log\left(x\right)$

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

$30-\left(\sqrt{25}+15\right)+2\cdot\sqrt{9}$

$\left(\frac{2n^6w^3}{5n^5w^2}\right)^3$

$3\left(x-6\right)-8\left(x-4\right)>2\left(7x-7\right)$

$\left(x^4-\frac{3}{2}x^3\right)$

$\lim_{x\to0}\left(\frac{\left(1-\cos\left(x\right)\cdot\sin\left(x\right)\right)}{x^2}\right)$