Wykonaj mnożenie.Odpowiedź podaj w najprostrzej postaci:
a) x x² + x
_____ : _______ =
6-x x² - 36
b) x² - 1 x² - 2x + 1
_______ : ___________ =
x² + x x² + 1
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zad.a/ x x²-36 x(x²-36) x(x-6)(x+6) x(x+6) x+6
------- · --------- = --------------- = -------------- = ---------- = -------
6-x x²+x (6-x)(x²+x) (6-x)x(x+1) -x(x+1) -(x+1)
zad.b/ x²-1 x²-2x+1 (x-1)(x+1) x²+1 (x-1)(x+1)(x²+1)
-------- : ------------ = ------------- · ----------- = -------------------- =
x²+x x²+1 x(x+1) (x-1)² x(x+1)(x-1)²
(x-1) (x²+1) x²+1
---------------- = -------------
x(x-1)(x-1) x(x-1)