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(x-12)^2= 45

x^2 - 24x + 144 = 45

x^2 - 24x + 99 = 0

Using quadratic formula :

(24 +/- (180)^0.5) / 2

In exact terms (using surds) = 12 +/- 3 x (5)^0.5

OR = 18.7 or 5.29

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16y ago

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