$$\sin\left(2x\right)-\tan\left(x\right)\cos\left(x\right)=\tan\left(x\right)$$

$$5y^2-45$$

$$\sqrt[4]{x^3}$$

$$1+\cos\left(2a\right)$$

$$\frac{3}{4}^{1-2}$$

$$m\left(x+b\right)-n\left(x+b\right)$$

$$f\left(x\right)=\sin^5\left(3x^3+2x\right)$$