# How do you factor #5n^2-4n-1#?

##### 2 Answers

Apr 6, 2018

Apr 6, 2018

#### Answer:

(5n + 1)(n - 1)

#### Explanation:

Use the new AC Method (Socratic, Google Search)

Converted trinomial:

Method. Find the 2 factor numbers of y', then, divide them by a.

Find 2 numbers, that have opposite signs (ac < 0), knowing their sum (b = -4) and their product (ac = - 5). They are 1 and - 5.

Back to y, the factor-numbers are:

Factored form: