Question

How many zero pairs must be added to the function

f(x) = x2 – 6x + 1 in order to begin writing the function in vertex form?

Answer 1

the answer is 8

Explanation:

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Answer 2

There must be added one zero pair: -9, 9.
f (x) = x² - 6 x + 9 - 9 + 1 = ( x² - 6 x + 9 ) - 8 =
=( x - 3 )² - 8 ( the vertex form)