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  
 
0
282
2
avatar

4x^2+18x+8

 Apr 13, 2016
 #1
avatar+173 
-1

2(2x+1)(x+4)

 Apr 13, 2016
 #2
avatar
0

Solve for x:
4 x^2+18 x+8 = 0

 

The left hand side factors into a product with three terms:
2 (x+4) (2 x+1) = 0

 

Divide both sides by 2:
(x+4) (2 x+1) = 0

 

Split into two equations:
x+4 = 0 or 2 x+1 = 0

 

Subtract 4 from both sides:
x = -4 or 2 x+1 = 0

 

Subtract 1 from both sides:
x = -4 or 2 x = -1

 

Divide both sides by 2:
Answer: |  x = -4      or       x = -1/2

 Apr 13, 2016

23 Online Users

avatar
avatar