SOLUTION: I am working on this question and need help on it..
Which of the following is the correct factorization of (x2 - x - 6) ?
a.(x-3)(x+2)
b.(x+3)(x-2)
c.(x+3)(x+2) - I picked
Question 899930: I am working on this question and need help on it..
Which of the following is the correct factorization of (x2 - x - 6) ?
a.(x-3)(x+2)
b.(x+3)(x-2)
c.(x+3)(x+2) - I picked
d.(x-3)(x-2)
Hi
x^2 - x -6 = (x+2)(x-3) careful on the Signs
F First terms x^2
O Outside terms -3x
I Inside terms 2x
L Last terms -6
d.(x-3)(x-2)
c.(x+3)(x+2)-i picked
See FOIL, this is x^2 + 5x + 6
Answer by lenny460(1073) (Show Source): You can put this solution on YOUR website! I am working on this question and need help on it..
Which of the following is the correct factorization of (x2 - x - 6) ?
a.(x-3)(x+2)
b.(x+3)(x-2)
c.(x+3)(x+2) - I picked
d.(x-3)(x-2)
The answer (c) you picked is incorrect. When you FOIL you get
x^2 + 5x + 6
The correct answer is (a).
You get x^2 - x - 6
Choice (d) you get x^2 - 5x + 6.
You must be very careful with signs (-) and (+) when factoring.