We use cookies to personalise content and advertisements and to analyse access to our website. Furthermore, our partners for online advertising receive pseudonymised information about your use of our website. cookie policy and privacy policy.
 
+0  
 
+1
34
1
avatar

Factor 4n^2+9n+5

 Oct 27, 2019
 #1
avatar+101 
0

4n^2 + 9n + 5 = 0

ab = 20, a+b = 9

5 and 4 work because 5x4=20, 5+4=9

4n^2 + 4n + 5n + 5 = 0

common factor

4n(n+1) + 5(n+1)=0

(4n+5)(n+1)=0

4n+5 = 0, n+1 = 0

n = -5/4, n=-1

 Oct 27, 2019

21 Online Users

avatar
avatar