lizbeth1194
lizbeth1194
03-09-2014
Mathematics
contestada
Factoring Trinomals (a=1)
b^2 + 8b + 7
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Аноним
Аноним
03-09-2014
[tex]b^2+8b+7=b^2+b+7b+7=b(b+1)+7(b+1)\\\\=\boxed{(b+1)(b+7)}[/tex]
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2. Three bells P, Q and R ring at intervals of 40, 48and 60 minutes respectively. If they ring together at 6.15 a.m. when will they ring together again?
