$$\frac{d^2}{dy^2}\left(2x\cdot sen\left(y\right)\right)$$

$$6^9\cdot6^{-6}$$

$$0.7-2.893-0.24$$

$$\sin\left(x\right)\cdot\tan\left(x\right)=\sin\left(x\right)$$

$$\left(-8\right)^{15}$$

$$9a+\frac{7}{9}<0$$

$$8+9.6^2-5$$