$$\left(-4\right)\left(-3\right)\left(0\right)$$

$$x^3-2x+\frac{6}{x}-2$$

$$43.5\cdot9$$

$$\left(2c-2\right)^2$$

$$\frac{\csc\left(x\right)\sec\left(x\right)}{\csc\left(x\right)+\sec\left(x\right)}$$

$$-15:-9$$

$$\sin^2.999+\cos^2.999$$