How do you factor 4n2 plus 26n minus 32?

Answer 1

First take out a factor of 4, giving:

4(n2+6.5n-8)

Next you can use the completing the square method:

4( (n+3.25)2-(3.25)2 - 8 )

Which can be simplified to:

4( (n+3.25)2 - 18.5625)