oblicz krok po kroku (a do potengi 2 - 25 ) * a = dla a = 10 plis
a : 4+3a = dla a = 28
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rozwiąż ruwnanie i sprawdz ;
2a-1 3/4 = 2 1/2
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(a²-25)·a=(10²-25)·10=(100-25)·10=75·10=750
a:4+3a=28:4+3·28=7+84=91
(a^2-25)*a
(10^2-25)*10
(100-25)*10
75*10=750
a:4+3a
28:4+3*28
7+84=91
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2a-1 3/4= 2 1/2
2a=2,5+1,75
2a=4,25 / :2
a=2,125
spr. 2*2,125-1,75=?
4,25-1,75=2,5
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