Respuesta :

I'm guessing you're familiar with FOIL - how to multiply two binomials. Factoring is just reversing that process.  Set up two "blank" binomials.
(          )(          ).  How would each one begin?

(b         )(b          )  The reason is that you want the F part of the product to be b^2.

How would the binomials end?  You want the L part of the product to be -2c^2.

(b     2c)(b     c)

Now figure out the signs in between to create a middle term of +1bc.