Question

What is a factor of x^2 + 8x -48? (X-6). (X+4). (X-16) (x+12)

Answer 1

`(x + 12)`

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
`[x - 4][x + 12]`.

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