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
203
2
avatar+4116 

Help 11 

 Mar 6, 2018
 #1
avatar+18360 
+1

factor the numerators and denominators to get

 

 

(x+5)(x+4)    (x-4)(x+3)

-------------------------------

(x+3)          (x-1)(x+4)    

 

Denominator cannot = 0   so x cannot equal  -3 +1 -4      

 

cancel out like terms in Num and denom and you are left with:

(x+5)(x-4)

--------------

(x-1)

 Mar 6, 2018
 #2
avatar+100571 
+1

12)

 

  3x          x + 7

____   -   _____

x - 7          x

 

3x ( x)             (x + 7) ( x - 7)

______     -    ___________

(x - 7) x             (x - 7) x

 

 

3x ( x) -  (x - 7) ( x + 7)

__________________

    (x - 7)  x

 

 

3x^2  -  [ x^2 - 49)

_______________

  (x - 7)  x

 

 

2x^2 + 49

________

x ( x - 7)

 

 

 

cool cool cool

 Mar 6, 2018

6 Online Users