I am supposed to factor a trig expression.
the expression is:
1-2 sin^2x+sin^4x
Any help is appreciated!
note that your expression is a quadratic in $\displaystyle \sin^2 x$. to see this, let $\displaystyle a = \sin^2 x$, then your expression is
$\displaystyle 1 - 2a + a^2$
now hopefully you can factor that, then just replace $\displaystyle a$ with $\displaystyle \sin^2 x$ when done