Question 86802
solve the equation by completing the square

a^2-12a+27=0
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a^2-12a+? = -27+?
Complete the square.
a^2-12a+(12/2)^2 = -27 + (12/2)^2
(a-6)^2 = -27 + 36
(a-6)^2 = 9
(a-6) = 3 or (a-6) = -3
a = 9 or a = 3
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Cheers,
Stan H.