$7-3\cdot4$

$\sin\left(x\right)+\sin\left(x\right)\cdot\cot^2\left(x\right)=\csc\left(y\right)$

$\sqrt{25-0.1x}=\sqrt{9+0.1x}-2$

$\int\frac{1}{3\sqrt{x}+2}dx$

$\frac{4}{49}\left(m^2\right)-\frac{32}{7}\left(mn\right)+64n^2$

$\left(5+b\right)^5$

$\left(6x+4y+z\right)^2$