if x square +14x + k is a perfect square find k

x^2 + 14x + k

k = [14(1/2)]^2

k = (7)^2

k = 7 times 7

k = 49

The value of k is 49

I want an answer

x^2 + 14x + k

take 1/2 of 14, then square that

Thanks so much.

If x√2+14x+k

I need the full solution... please