$$\int2x\left(5x^2-4\right)dx$$

$$\int110\cdot sec^2\left(x\right)dx$$

$$\left(2j+1\right)9-7j$$

$$\:\left(2z+5k\right)^4$$

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

$$01x^2+182x+91$$