Renee2018
Renee2018
20-04-2016
Mathematics
contestada
what times what equals -120 and adds up to 14
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Dontthankmebrainme
Dontthankmebrainme
20-04-2016
Hello!,
-200 + 80 = -120 then
-120+134=14
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Аноним
Аноним
20-04-2016
you can solve it with the following method:
a+b=14
a=14-b
axb=-120
(14-b)b=-120 (replace the a value in terms of b found in the last step)
-b²+14b=-120
-b²+14b+120=0
using the quadratic equation you should get b= 20 and -6
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