Respuesta :

ChoiSungHyun

Step-by-step explanation:

y = x² - 6x + k = (x + a)² = x² + 2ax + a², where a is a real constant.

By Comparing Coefficients, we have

2a = -6 and a² = k.

=> a = -6/2 = -3,

=> k = (-3)² = 9.

Hence the value of k must be 9.
The value of k is *9*

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