Thread: easy factoring problem

I cant remember how to factor polynomials to the 3rd degree:



thanks for the help

Originally Posted by discobob

I cant remember how to factor polynomials...

To review, try here.

The Rational Roots Test tells you to check x = -1 and x = +1, using synthetic division. Once you've found one root, you can apply the Quadratic Formula to what remains.

so, using synthetic division, +1 is a zero. for "the rest" do you mean ? If so, using the quadratic equation, zero's are -1/2 and +1. Is that correct?

Originally Posted by discobob

so, using synthetic division, +1 is a zero. for "the rest" do you mean ? If so, using the quadratic equation, zero's are -1/2 and +1. Is that correct?

Hi discobob,

has no rational zeros. +1 is not a zero. Neither is -1/2.

Originally Posted by discobob

so, using synthetic division, +1 is a zero. for "the rest" do you mean ? If so, using the quadratic equation, zero's are -1/2 and +1. Is that correct?

See attached for the graph of

edit: if that graph looks weird that's because I zoomed in - if you sketch it it's a normal cubic