$-7=\frac{x}{3}+2$

$-17^1$

$\left(-3x^5y^2\right)\left(-2x^6y\right)\left(-2x^2y^3\right)$

$\lim_{x\to\infty}\left(\frac{\left(x^2-1\right)^2}{1-\cos\left(x-1\right)}\right)$

$\left(2m^4-6n^5\right)^2$

$\left(-2ab^2+bc^3\right)\left(2ab^2+bc^3\right)$

$\lim_{x\to0}\left(\frac{6-\sin\left(7x\right)}{5x}\right)$