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January 30, 2015

January 30, 2015

Posted by **Ruth** on Sunday, September 29, 2013 at 1:59am.

- Algebra -
**Steve**, Sunday, September 29, 2013 at 6:20amwell, b=0 (duh), so

PA^2 = (a-2)^2 + 5^2

PB^2 = (a-4)^2 + 3^2

so you want the minimum value of

(a-2)^2 + 5^2 + (a-4)^2 + 3^2 = 2a^2 - 12a + 54

you know the vertex is at (3,36).

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