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tsibirev2010
@tsibirev2010
July 2022
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natali3221
1) 9х(х+6)-6(1,5х²-х)=8
9х²+54х-9х²+6х=8
60х=8
х=8:60
х=2\15
2) 3(х³+х²-4)=х(х²+2х)+2(х³+0.5х²-х+5)
3х³+3х²-12=х³+2х²+2х³+х²-2х+10
3х³-3х³+3х²-3х²+2х=10+12
2х=22
х=11
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Answers & Comments
9х²+54х-9х²+6х=8
60х=8
х=8:60
х=2\15
2) 3(х³+х²-4)=х(х²+2х)+2(х³+0.5х²-х+5)
3х³+3х²-12=х³+2х²+2х³+х²-2х+10
3х³-3х³+3х²-3х²+2х=10+12
2х=22
х=11