$-\left(27-30\right)-\left(10+23\right)$

$40\cdot\frac{3}{8}$

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

$22.89-48.4$

$\int t^4\left(t^5+5\right)^5dt$

$\left(\frac{7x^3}{6}-\frac{3}{2}\right)\left(\frac{7x^3}{6}+\frac{3}{2}\right)$

$\frac{dy}{dx}\left(\left(x^x\right)sin7x\right)^{9x}$