anonymous
  • anonymous
4(2)^3 Why is the answer 32. If I follow PEMDAS, I should do the 4(2) first right?
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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chestercat
  • chestercat
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anonymous
  • anonymous
PEMDAS don't consider caculating series if you calcuate by PEMDAS, PEMDAS calculate by (4*2)^3 So for this calculating, you had better buy scientific calculator avavilable parenthesis function
asnaseer
  • asnaseer
PEMDAS is explained clearly here: http://www.mathsisfun.com/operation-order-pemdas.html
anonymous
  • anonymous
Ok thanks

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anonymous
  • anonymous
It says to do the parens first! Ok so 4x2 is 8, 8^3 is 512! Wrong answer!
asnaseer
  • asnaseer
in your particular case, it would imply you do the braces first to get:\[4(2)^3=4\times2^3\]then the exponents to get:\[4(2)^3=4\times2^3=4\times8\]
asnaseer
  • asnaseer
what you calculated was:\[(4\times2)^3=(8)^3=8^3\]
anonymous
  • anonymous
Ok I see the () are for the ^3 not for the 4
asnaseer
  • asnaseer
yes :)
asnaseer
  • asnaseer
generally if you something like \(x*(...)^n\) it means first calculate what the \(...\) evaluates to inside the braces, then remove the braces and apply the exponent.
asnaseer
  • asnaseer
and finally multiply by x
anonymous
  • anonymous
Thank you!
asnaseer
  • asnaseer
yw :)

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