How many zero pairs must be added to the function f(x) = x2 – 10x – 4 in order to begin writing the function in vertex form? A.4 B.10 C.21 D.25

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asked May 21, 2017 166k views

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Jackson Allan · Answer 1 · 2017-05-27T05:56:04+0000

f(x) = x² - 10x - 4
f(x) + 4 = x² - 10x

- 10x / 2 = - 5x

- 5² = 25

f(x) + 4 + 25 = (x² - 10x + 25)
f(x) + 29 = (x-5)²
f(x) = (x-5)² - 29

D. 25

How many zero pairs must be added to the function f(x) = x2 – 10x – 4 in order to begin writing the function in vertex form? A.4 B.10 C.21 D.25

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