$n^4-10nu+25n^2$

$\left(x-2\right)^2\left(x+2\right)^2\left(x^2+4\right)^2+32x^4-256$

$\int\sqrt{x}\left(x+1\right)dx$

$-\frac{x}{4}=12$

$\left(3m^3+2n^2\right)\left(3pm^3n^2+4m^2n^2\right)$

$4cosx+4sinxtanx=4secx$

$sin\left(\frac{4}{5}\right)^2+cos\left(x\right)^2=1$