SOLUTION: Which of the following is a factor of x2+ 2x – 48? x – 8 x + 12 x – 6 None of the above I'm confused couldn't it be a or c

Algebra ->  Polynomials-and-rational-expressions -> SOLUTION: Which of the following is a factor of x2+ 2x – 48? x – 8 x + 12 x – 6 None of the above I'm confused couldn't it be a or c      Log On


   

Question 623674: Which of the following is a factor of x2+ 2x – 48?
x – 8
x + 12
x – 6
None of the above
I'm confused couldn't it be a or c
Found 2 solutions by ewatrrr, Emsley:
Answer by ewatrrr(24785) About Me  (Show Source):
You can put this solution on YOUR website!
 

Hi,  

x^2+ 2x – 48   | Note use of ^ (uppercase 6)

factoring:  

(x+8)(x-6)     | watch Your signs while factoring... Outside terms and Inside terms = 2x

F	First terms  x^2

O	Outside terms -6x

I	Inside terms   8x

L	Last terms    -48

Answer by Emsley(35) About Me  (Show Source):
You can put this solution on YOUR website!
You are looking for two numbers whose product is -48 and which combine to make +2. By trial and error you will find that the two numbers are +8 and -6
So the factors are (x+8)(x-6)