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Anonymous Anonymous
  • 08-04-2014
  • Mathematics
Answered

let n = 2.5. what is the value of 2n(6n-3)+4n?

Verified Answer :

Scryt
Scryt Scryt
  • 08-04-2014

\(2n(6n-3)+4n\)

substitute \(n=2.5\)

\(2*2.5(6*2.5-3)+4*2.5=5(15-3)+10=60+10=70\)

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Lilith
Lilith Lilith
  • 08-04-2014

\(n = 2.5, \ \\\\\ 2n(6n-3)+4n = 12n^2 - 6n +4n =12n^2-2n\\ \\12n^2-2n=12 *(2.5)^2-2*2.5=12*6.25-5=75-5=70\)


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