Algebra

Find all positive values for k for which each of the following can be factored.

X^2-x-k





Using the quadratic equation,

x= 1/2 +-1/2* sqrt (1+4k)

Now, the sqrt has to be of a positive number, so 1+4k>0 so any value of
k>-1/4 should work.

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asked by Scott

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