SOLUTION: 2x2 + bx � 15 Find all positive and negative integers b for which the polynomial can be factored.

Question 227692: 2x2 + bx � 15 Find all positive and negative integers b for which the polynomial can be factored.
Answer by jsmallt9(3758) (Show Source): You can put this solution on YOUR website!
An expression like , if it factors at all, will factor into the form: where and are factors of the 2 and and are factors of the -15. And the

So to find all the possible b's we need to find the factors of 2 and -15:
Factors of 2:
1 and 2
Factors of -15:
-1 and 15
1 and -15
3 and -5
-3 and 5
Now we just use all the possible combinations of factors of 2 and factors of -15 in :

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