Factoring Trinomials: a = 1 (Continued) Answers

x2 + x – 42 = x2 +– 42

= x()–(x + 7)

= x()–(x + 7)

=

To verify,the factors.

A prime polynomial is an irreducible polynomial with integer coefficients that cannot be factored into polynomials of lower degree over the real number system.Which trinomial is prime?