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23-12-2017
Mathematics

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Let f(x) = 14x3 + 28x2 – 46x and g(x) = 2x + 7. which is the solution set to the equation 1 12 f(x) = g(x)?

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chudung1976 chudung1976

31-12-2017

1 12 f(x) = g(x)
or 112*(14x3 + 28x2 – 46x )= 2x + 7
and 112*(42 +56 – 46x )= 2x + 7
112*(98 – 46x )= 2x + 7
and 10.976- 5.152x=2x+7
and -5.152x-2x=7-10.976
we have -5.154x= -10.969
and x= 10.969/5154
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