$$\int4bcx^3dx$$

$$\left(4ut-2ab\right)^2$$

$$3 ( 2 + 10 )$$

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

$$\left(\frac{1}{1+y^2}+\cos\left(x\right)-2xy\right)\frac{dy}{dx}$$

$$8+2\left(x+2\right)^2$$

$$\int_0^1\frac{6x^2}{\sqrt{x^2+4}}dx$$