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t²/2 = 2t - 2
t²/2 - 2t + 2 = 0 | *2
t² -4t +4 = 0
(t - 2)² = 0 ---> t - 2 = 0 ---> t = 2 i wracamy do podstawienia:
(4)√x+3 = 2 obie strony podnosimy do 4 potęgi:
x + 3 = 16 ---> x = 13 GOTOWE!!!