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Bluedayn
@Bluedayn
May 2021
2
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Упростить выражение, найти значение
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Илюха134
1)1/b-2 -2/b²-2b=b-2/b(b-2)=1/b
2)6b/b²-9 *1/b=6b*1/(b²-9)*b=6/b²-9
3)1/b-3 -6/b²-9=b+3-6/b²-9=b-3/(b-3)(b+3)=1/b+3
4)при b=1/2
1:(1/2+3)=1: 7/2=2/7
Ответ:2/7
1 votes
Thanks 1
турал98
Вроде так....другого способа решения незнаю!!!
2 votes
Thanks 1
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Answers & Comments
2)6b/b²-9 *1/b=6b*1/(b²-9)*b=6/b²-9
3)1/b-3 -6/b²-9=b+3-6/b²-9=b-3/(b-3)(b+3)=1/b+3
4)при b=1/2
1:(1/2+3)=1: 7/2=2/7
Ответ:2/7