Phillyd80 Phillyd80

05-08-2017
Mathematics

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Solve the equation by completing the square. Round to the nearest hundreth if necessary. x^2-x-7=0

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Аноним Аноним

05-08-2017

x^2 - x = 7
(x - 0.5)^2 - 0.25 = 7
(x - 0.5)^2 = 7.25
(x - 0.5) = +/- sqrt 7.25
x = 0.5 +/- sqrt7.25

solution set is {-2.19, 3.19,}

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