Skróć ułamek:
4-(x-2)^2
------------------------
16x-8x^2+x^3
----- to kreska ułamkowa
^ to znaczy do potęgi
4 -(x^{2} - 4x + 4) 4 - x^{2} + 4x - 4 x(- x + 4) -x + 4
--------------------- = ----------------------- = -------------- = -----------
16x - 8x^{2} + x^{3} 16x - 8x^{2} + x^{3} x(16 - 8x + x^{2}) 16 - 8x + x^{2}
4 - x 1
------- = -------
(4-x)^{2} 4 -x
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4 -(x^{2} - 4x + 4) 4 - x^{2} + 4x - 4 x(- x + 4) -x + 4
--------------------- = ----------------------- = -------------- = -----------
16x - 8x^{2} + x^{3} 16x - 8x^{2} + x^{3} x(16 - 8x + x^{2}) 16 - 8x + x^{2}
4 - x 1
------- = -------
(4-x)^{2} 4 -x