$\log_{a^2}\left(2^2y^6\right)+2\log_a\left(\frac{1}{y^3\left(\sqrt{2}\right)}\right)-3\frac{\log\left(\frac{2}{4}\right)}{\log\left(a\right)}$

$y^2dx=\left(1+x^2+y^2+x^2y^2\right)dy$

$\cos\:\:x+cosxcot^{\left(2\right)}x=cotxcscx$

$x\cdot\frac{dy}{dx}+y=x^2$

$9^7\cdot9^4$

$\frac{1}{e^y}dy=e^xdx$

$6n-7n+4n+3n-n$