$\int\left(\frac{4}{4x-9}\right)dx$

$10+8+9\cdot4$

$-3\cdot6-\left(-5\right)$

$2-\log_{10}\left(x\right)=3\log_{10}\left(y\right)$

$b=\frac{\cos\left(x\right)+\sin\left(x\right)\cdot\tan\left(x\right)}{\sin\left(x\right)\cdot\sin\left(x\right)}$

$x^4-4x^4$

$ydx+xdy=2dy$