$\frac{1}{1-\sin\left(a\right)}+\frac{1}{1+\sin\left(a\right)}=2\left(\sec\right)^2a$

$\left(a+b\right)^2+\left(a-b\right)^2=2\left(a^2+b^2\right)$

$16w^4-25z^6$

$\frac{dy}{dx}=\frac{1}{2}\left(5-y\right)$

$\int3sec\left(2x\right)tan\left(2x\right)dx$

$y^2+1=y\sec^2\left(x\right)\frac{dy}{dx}$

$x+6\left(x-8\right)$