Rozwiąż
(x-1/2)(x-1/2)=2(-x+4)
x^2 - 1/2x - 1/2x + 1/4 = -2x + 8
x^2 -x + 2x = 8 - 1/4
x^2 + x = 7 i 3/4
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x^2 - 1/2x - 1/2x + 1/4 = -2x + 8
x^2 -x + 2x = 8 - 1/4
x^2 + x = 7 i 3/4