$$\frac{d}{dx}x^2y^2+x^2y^2=1$$

$$\lim_{x\to\infty}\left(\frac{4x^3+3}{2x^3+3x}\right)^{\frac{x^2+2}{x^2}}$$

$$\left(4x^2+4x+1\right)^4$$

$$\left(x-8\right)\cdot\left(-x+3\right)<0$$

$$\sec^2\left(a\right)+\csc^2\left(a\right)=\frac{1}{\sin^2\left(a\right)\cdot\cos^2\left(a\right)}$$

$$32x^4-2x^2$$

$$2x+3-x$$