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
145
1
avatar+315 
 Dec 22, 2018
 #1
avatar+100516 
+2

1. If x + 2 is a factor, then x = -2 is a root

Using synthetic division

 

-2  [ 5   8   -7   - 6  ]

          -10   4     6

       ____________

       5    -2  -3    0

 

Since we get 0 as a remainder, then -2 is a root and (x + 2) is a factor

 

 

2.  Likewise....if (x + 1) is a  factor and - 1 is a root.....so...

 

 

-1  [   5    8    -7     - 6 ]

              -5   -3      10

        ______________

         5   3    -10     4

 

Since the remainder is not = 0, then  -1 is not a root  .....so  x + 1  is not a factor

 

 

 

cool cool cool

 Dec 22, 2018

9 Online Users

avatar