Question: Consider the expression y = x2 2kx + k2 +1. For which of the following values of K, y will be always greater than

Consider the expression y = x2 – 2kx + k2 +1.

For which of the following values of K, y will be always greater than zero for any value of x?

(a) K > 0

(b) K is any real number.

(c) K > 2

(d) –2 < K < 7

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