Question 167220
To solve this, find all the two pair factors of 50
50 * -1 and -50 * 1
25 * -2 and -25 * 2
5 * -10 and -5 * 10 

For each pair, find the value of b that results from using that pair
Example (a + 50)(a -1) = a^2 +49a - 50  --> b=49
(a - 50)(a + 1) = a^2 -49a - 50   --> b=-49
Do the same for the other 4 pairs to find the other values of b