Factor the trinomial: x^2-x-12 x 2 − x − 12

a. (x-6)(x+5)

b. (x-4)(x+3)

c. (x-6)(x+2)

d. (x-5)(x+4)

Please double check to ensure that y ou have copied the original problem correctly.  x^2-x-12 x 2 − x − 12.  What do you mean by -12 x 2?  Perhaps you meant -12x^2?  

Just suppose that you meant -12x^2.  Then your expression becomes

x^2-x-12x^2 − x − 12    and this simplifies to -11x^2-2x -12.  Not easy to factor!

So, once again, please ensure that you have copied down this problem exactly as it was given in your assignment.

J= r + 9 because since jessica rode 9 more miles than roger, you add 9 miles to rogers mileage.