usuń niewymierności z mianownika.prosze o podanie w jakis spobos to usuwacie!
a) 6
----
3(pierwiastek)2+1
b) 2
---------
pierwiastek 2 + pierwiastek 3
C)4
-------
2pierwIASTEK5-3pierwiastek3
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a)
6 3√2-1 18√2 - 6 6(3√2-1)
---- · ------- = ----------- = ---------
3√2+1 3√2-1 18-1 17
b)
2 2(√2-√3) 2(√2-√3)
--------- = ----------- = --------- = -2(√2-√3)
√2 +√3 2+√6-√6-3 -1
C)
4 4·(2√5+3√3 ) 8√5+12√3 8√5+12√3
------- = ----------------- = -------------- = ------------
2√5-3√3 (2√5-3√3)·(2√5+3√3) 20-27 -7
a)
b)
c)