web2.0calc
 
+0  
 

Pre-Calculus Comprehensive Review Final

0
729
2
avatar+74 

I had to skip a trimester of math and my teacher is still having me do the final on the first 5 chapters I don't even know of, one of the questions is... Find the zero(s) of g(x)=x(squared) -3x-40. Will you also put the steps on how you solved it? Thank you.

 May 19, 2016

2+0 Answers

 #1
avatar+128731 
0

x^2 - 3x - 40   = 0     factor this as

 

(x - 8) ( x + 5)   = 0

 

Set each factor to 0

 

x  - 8    =  0                               or              x + 5   = 0

 

add 8 to both sides                                    subtract 5 from both sides

 

x  = 8                                 or                     x  =   -5

 

And those are the two solutions  [values that make  g(x)  = 0  ]

 

 

 

cool cool cool

 May 19, 2016
 #2
avatar+74 
0

Thank You!!! I wish I known how easy that one was sooner lol, Thank you so much!

 May 19, 2016
edited by Guest  May 19, 2016

2 Online Users

avatar

Top Users

avatar+128731 CPhill moderator
avatar+118613 Melody moderator
avatar+33616 Alan moderator
avatar+14933 asinus moderator
avatar+9664 MaxWong
avatar+3144 admin administrator
avatar+2440 GingerAle
avatar+1791 tomtom
avatar+1679 wiseowl
avatar+1610 bader
avatar+1190 parmen

Sticky Topics