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17-04-2017
Mathematics

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x^(2) + 10x=24 by completeing the square

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Cukiemihu Cukiemihu

17-04-2017

(b/2)^2=(−5)^2
x^2−10x+(−5)^2=24+(−5)^2
x^2−10x+25=49
(x−5)^2=49 (square root)
(x−5)=±7

x-5=7 => x=12
x-5=-7 => x=-2

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