Posted by John on Thursday, April 10, 2008 at 1:57pm.
Consider the equation x^2 + 20 = 12x
A) draw geometric diagram representing this equation.
B) Show how to complete the square geometrically.
C) Solve the equation.

Math  drwls, Thursday, April 10, 2008 at 7:28pm
We can't draw graphs for you here. That is something you shood be able to do on your own, anyway.
Rewrite the equation as x^2 12x +20 = 0
A perfect square that includes the first two terms would be
(x6)^2 = x^2 12+ 36
Therefore you can rewrite the original equation as
(x6)^2 36+20 = 0
(x6)^2 = 16
x6 = +/4
x = 2 or 10
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