emoryward
emoryward
13-06-2016
Mathematics
contestada
Find the product.
(7q - 5)(7q + 5)
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Аноним
Аноним
13-06-2016
(7q−5)(7q+5) =(7q+−5)(7q+5) =(7q)(7q)+(7q)(5)+(−5)(7q)+(−5)(5) =49q2+35q−35q−25 =49q2−25
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