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November 20, 2014

November 20, 2014

Posted by **Tyriq** on Friday, August 20, 2010 at 8:00pm.

y=x^2-8x+10

- math -
**MathMate**, Friday, August 20, 2010 at 9:04pmThis is called completing the squares:

y=x²-8x+10

y=(x-4)²-16 + 10

y=(x-4)² - 6

The vertex is thus at (4,-6).

You can also get the vertex directly from:

(-b/2a, -Δ/4a)

=(-(-8)/2, -((-8)²-4*1*10)/4a)

=(4, -6)

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