Answer:
[tex](x + 12)[/tex]
Step-by-step explanation:
Find two numbers that when added up to 8, they also multiply up to 48. Those numbers would be 4 and 12, but which sign to give them depends on the sign of our B-term. Since B is 8, we give the positive sign to the larger number, which in this case is 12, therefore you have the factors of [tex][x - 4][x + 12][/tex].
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