Assuming the polynomial below is factorable, choose all the positive values for "b".
x^2+bx-20
19,15,1,-1,8,-8,-19
To determine the positive values for "b" that make the polynomial factorable, we need to find the factors of -20 that add up to "b".
Factors of -20: 1, -1, 2, -2, 4, -4, 5, -5, 10, -10, 20, -20
From this list, we can see that the factors that add up to a positive value are: (1, -20) and (-1, 20), (4, -5) and (-4, 5), (8,-2) and (-8, 2), and (10, -2) and (-10, 2).
Therefore, the positive values for "b" are 1, 4, 8, and 10.
Therefore, the correct answer is 1, 4, 8, and 10.