Question

factor: 49n^2-56n+16

Answer 1

factor the 49 and the 16 and see if you can combine them by multipication and addition so as to get the middle coefficient -56
the factors will be of the form
(ax - b)(ax - b)

where a and b are the 2 numbers to be found

Answer 2

Hint:- the factors of 49 are 7 * 7
the factors of 16 will be both negative

Answer 3

http://www.calculatorsoup.com/calculators/math/factors.php