rozwiąż równanie:
a) log3 (8−x) = 0
b) log1/2 (4−x) = log1/2 (2x+1)
c) logx (3x2 − 5x +2) =2
d) log7 (x+3) − log7 (x−1) = log7 5
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a)
b)
c)
d)
llog_7