Question 44332
From 15x² - 7x – 2, we factor by looking at the product of a times c, here that is 15 times 2...or 30...then we ask, what are the factors of 30 that have a difference of 7...that would be 10 and 3 and than adjust our binomial factors to reflect such products...so we get
15x² - 7x – 2 =
(5x + 1)(3x - 1)