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OpenStudy (anonymous):
x2 + bx - 35 = (x + 5)(x - 7)
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jimthompson5910 (jim_thompson5910):
notice how the +5 and -7 multiply to -35
jimthompson5910 (jim_thompson5910):
to get the value of b, you would add +5 and -7
TheSmartOne (thesmartone):
Use foil method and factor it out.|dw:1414462062737:dw|
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