Hello,(adsbygoogle = window.adsbygoogle || []).push({});

I'm wondering if there's some nice formula for the expansion of trinomials, like this:

[tex]\prod_i \left(y + x - a_i\right)[/tex]

or for this:

[tex]\prod_i \left(x^2 + a_ix - b_i\right)[/tex]

I know for instance that in the case of binomials there is the elementary symmetric polynomials available; thus I wonder if there's anything similar for trinomials. Thank you :)

**Physics Forums | Science Articles, Homework Help, Discussion**

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

# Formula for multiplication of trinomials

**Physics Forums | Science Articles, Homework Help, Discussion**