x^2-x-3/4=0用配方法解方程

如题所述

x^2-x-3/4=0 ==> (x^2 - x + 1/4) - 1 = 0 ==> (x^2 -x +1/4) = 1 ==> (x -1/2)^2 = 1 ==> |x - 1/2| = 1 ==> x = 1/2 + 1, 1/2 -1 ==> x =3/2, -1/2

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