Question

Fector of 8n^2-4n-180=0

Answer 1

4(2n2-n-45)=0
2n2-n-45=0
By splitting the middle term
2n2-10n+9n-45=0
2n(n-5)+9(n-5)=0
(2n+9)(n-5)=0
Therefore n=5 or n=-9/2

Answer 2

hope it helps........☺