February 2019 0 13 Report
Sprawdź , czy podana liczba x spełnia równanie.
a) (5-x) ( 2 + 1/2x) = 9 ( 3-x) , x=2
b) x do potęgi 2 + 3x = 2x + 6 , x =2
c) x do potęgi 2 -4x = 6-x , x = -1
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