yvonneyvonne65
yvonneyvonne65
30-06-2015
Mathematics
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simplify the expression (x+5)(x-7)
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Аноним
Аноним
30-06-2015
( x + 5 ) ( x - 7 )
( x ) ( x ) + ( x ) ( - 7 ) + ( 5 ) ( x ) + ( 5 ) ( - 7 )
x² - 7x + 5x - 35
= x² - 2x - 35.
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