+0  
 
0
46
1
avatar+79 

THe two values of x that satisfy x^2 + bx + c = 0, for integers b and c are x = 6 and x = -4. Find b.

 Dec 19, 2018
 #1
avatar+94275 
+2

THe two values of x that satisfy x^2 + bx + c = 0, for integers b and c are x = 6 and x = -4. Find b.

 

Since, x = 6  and x = - 4 are roots.....we must have that

 

(x - 6) ( x + 4)  = 0     expand

 

x^2  - 6x + 4x - 24 = 0

 

x^2 - 2x - 24  =  0

 

So

 

b = -2

 

 

cool cool cool

 Dec 19, 2018

42 Online Users

avatar
avatar
avatar
avatar
avatar
avatar
avatar
avatar
avatar
avatar

New Privacy Policy

We use cookies to personalise content and advertisements and to analyse access to our website. Furthermore, our partners for online advertising receive information about your use of our website.
For more information: our cookie policy and privacy policy.