$-\left(-30\right):6+5+24:\left(-3\right)$

$\int_1^3\left(1+2x\right)dx$

$9x^2+4x-6$

$\lim_{n\to\infty}\left(\ln\left(n\right)\right)^{\frac{1}{n}}$

$\int\frac{1}{x^6\sqrt{\left(4x^2\right)-9}}dx$

$\left(-68\right)\left(0.5\right)$

$\left(-55\:-30\right)-\left(-35-18\right)$