62.3k views
5 votes
When factoring, if it is NOT a perfect square trinomial, you should first try the __________ method.

Theres only a text box, no choices, please help!

1 Answer

3 votes

Answer:

See below.

Explanation:

Step-by-step explanation:

The 'ac' method. here's an example:

Factor x^2 - x - 6.

Compare with ax^2 + bx + c:

a = 1 and c = -6 so ac = -6.

b = -1 so we try -6 = -3 * 2:

x^2 - x - 6

= x^2 - 3x + 2x - 6

Factor by grouping.

= x(x - 3) + 2(x - 3)

= (x + 2)(x - 3).

User WJM
by
6.4k points