11-01-2016
Mathematics

contestada

what multiplies to -4 and adds up to 7?

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Billymkhoi Billymkhoi

11-01-2016

The two numbers are (7+ sqrt(65))/2 and (7- sqrt(65))/2

(7+ sqrt(65))/2+ (7- sqrt(65))/2= 7
(7+ sqrt(65))/2* (7- sqrt(65))/2)= -4.

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