NathanWadeGallegos NathanWadeGallegos

24-07-2017
Mathematics

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Solve the following equation by transforming it into a perfect square trinomial. x2 – 4x = 5 will mark as brilliant

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Аноним Аноним

24-07-2017

x^2 - 4x = 5
(x - 2)^2 - 4 = 5
(x - 2)^2 = 9

x- 2 = +/- sqrt9 = +/- 3
x = 3 + 2 or -3 + 2
solution set is {-1 , 5}

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