I missed a day of math class and didn't have time today to go over this with my teacher.
In math we covered factoring and solving higher order polynomials yesterday, but I wasn't there.
I've figured out difference and sum of cubes, which are pretty easy. I've also figured out difference of squares such as $4x^4-16$, but I'm having trouble with some other polynomiAls.
Take for example, $x^4-9x^2+14$. I recognize that the first part is difference of squares, so I can get $(2x^2-3x)(2x^2+3x)+14$, but then what do I do with the 14?
For another example, take $6x^4+24x^2-72$. I can take out the common factor of $6$, and get $x^4+4x^2-12$, but then what do I do from here? I see a sum of squares, but can that be factored? Is that the next reasonable step or do I do something different?
On the same page is also $m^4-8m^2+7$, and I'm not even sure where to start in this one. There's no common factor, so I can't do that, and it's not sum or difference of squares or cubes, so what do I do?