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magenporter
magenporter magenporter
  • 08-08-2016
  • Mathematics
Answered

Write x^2-12x+8 in vertex form.

Verified Answer :

dalendrk
dalendrk dalendrk
  • 08-08-2016

The vertex form: y = a(x - h)² + k

y = ax² + bx + c then h = -b/2a and k = f(h).

y = x² - 12x + 8

a = 1; b = -12; c = 8

h = -(-12)/(2·1) = 12/2 = 6

k = f(6) = 6² - 12·6 + 8 = 36 - 72 + 8 = -28

Answer: y = (x - 6)² - 28.

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