$$\frac{1+9^3}{1+9}$$

$$\int5x\cdot e^{7x-1}$$

$$-18m^2-17mn+15n^2+20^2+3mn-17n^2+5m^2+18mn+7n^2$$

$$\int x^4in\left(x\right)dx$$

$$\left(6g^2-24\right)\left(6g^2+24\right)$$

$$\log\frac{1}{2}x$$

$$\frac{-10x^3+7x-5}{2x^2-3}$$