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# Algebra 2

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-x2+4x=5

Sep 18, 2020

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$$x = {-b \pm \sqrt{b^2-4ac} \over 2a}$$

-x^2 + 4x -5 = 0          a = -1   b = 4   c = -5     plug in to the formula above to find the two values of x

Sep 18, 2020