$x^2+5x+8=0$

$\sqrt{10}-9\sqrt{10}+4\sqrt{10}$

$\left(5^2\cdot7^{-3}\right)^4$

$349-6x^2-15x-\frac{15}{x}-20$

$\int\left(6x^2+6x\right)\left(2x^3+3x^2+8\right)^4dx$

$\lim_{x\to-\infty}\left(e^{2x}-e^x\right)$

$\lim_{x\to1}\left(x+\ln\left(x\right)\right)^{\frac{2}{x^2-x}}$