Assuming the polynomial below is factorable, choose all the positive values for "b". x^2+bx-20
To determine the positive values for "b" that make the polynomial x^2 + bx - 20 factorable, we need to find two numbers that multiply to -20 and add up to "b".
The factors of -20 are: -1, -2, -4, -5, -10, and -20.
For the two factors to add up to a positive "b", we need to select a pair that includes a positive number.
We have the following possibilities:
1) -5 and 4 (add up to -1)
2) -4 and 5 (add up to 1)
3) -10 and 2 (add up to -8)
4) -2 and 10 (add up to 8)
5) 1 and -20 (add up to -19)
6) -20 and 1 (add up to -19)
Therefore, the positive values for "b" are 1 and 8.