SOLUTION: Forwhat value of k, the expression k2x2 + 2(k + 1) x + 4 is perfect square

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Question 1020032: Forwhat value of k, the expression k2x2 + 2(k + 1) x + 4 is perfect
square
Answer by solver91311(24713) About Me  (Show Source):
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Which is a perfect square iff:



Leaving the intermediate steps as an exercise for the reader, we have:



Which factors to:



Hence



or



Check:





Or







John

My calculator said it, I believe it, that settles it