So I was going through an exercise on non-monic quadratic trinomials and the question asked me to factorise 2x^2 - 10x - 28.
So my working out was:
2x^2 - 10x - 28
x^2 - 10x - 56
(2x - 14) (2x + 4) / 2
(x - 7) (2x + 4)
Howeve,r my final answer was not listed as the correct one in the answer section. The correct answer was in fact 2(x + 2)(x − 7). Which of the answers would be considered "fully factored". I would have though the form that involves only the terms within the brackets is preferential however, it appears I may be wrong.