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16-10-2016
Mathematics

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The product of some negative number and 10 less than three times that number is 8 . find the num

Respuesta :

19-10-2016

-x(3x-10)=8
-3x^2+10x=8 (DISTRIBUTE)
-3x^2+10x-8=0 (BALANCE TO ZERO)
(-3x+4)(x-2)=0 (FACTOR)
(-x+4/3)(x-2)=0 (SIMPLIFY)
{x=2 OR x= 4/3}

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