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

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) (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) (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)