SOLUTION: Determine all integral values of "k" so that each trinomial can be factored X^2 + kx - 9

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Question 1099077: Determine all integral values of "k" so that each trinomial can be factored
X^2 + kx - 9
Answer by josgarithmetic(39616) About Me  (Show Source):
You can put this solution on YOUR website!
Ways to make product -9 using integers:
system%28-1%2A9%2C-9%2A1%2C-3%2A3%29

Quadratic Trinomials using those:
%28x-1%29%28x%2B9%29=x%5E2%2B8x-9
%28x%2B1%29%28x-9%29=x%5E2-8x-9
cross%28%28x-3%29%28x%2B3%29=x%5E2%2B0x-9%29 but this is not a trinomial.


highlight%28system%28k=-8%2COR%2Ck=8%29%29