anonymous
  • anonymous
simplify: { 4xy ^{-2} }/{ 12x ^{-1/3}y ^{-5} }
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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jamiebookeater
  • jamiebookeater
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cwrw238
  • cwrw238
|dw:1378156915542:dw|
anonymous
  • anonymous
yes thats right
anonymous
  • anonymous
do i move the x and y exponents to the numerator?

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cwrw238
  • cwrw238
yes you can do that - they then become positive and you can simplify 4/12 of course
anonymous
  • anonymous
or can i just subtract the exponents?
cwrw238
  • cwrw238
then simplify the x and y terms using the rules of indices:- x^a * x^b = x^(a+b)
cwrw238
  • cwrw238
you can do either
anonymous
  • anonymous
oh i see, thanks! now that youve answered some of my questions, I'll ask you another. how do i simplify this|dw:1378157358216:dw| if it equaled a value i could do bae, do you know what to do?
anonymous
  • anonymous
3#x^4) y^3 /3 3# = cube root
anonymous
  • anonymous
im suppose to cube root it? I dont understand
cwrw238
  • cwrw238
if x = log(-2) 8 8 - (-2)^x
cwrw238
  • cwrw238
* 8 = (-2)^x (by the definition of logs)
cwrw238
  • cwrw238
hmm I dont there 's no real solution to that maybe the question is log2 8 not -2 ?
anonymous
  • anonymous
nope the base was -2
anonymous
  • anonymous
i also have log3(1/3)
anonymous
  • anonymous
as another question
cwrw238
  • cwrw238
log3 (1/3) = x 1/3 = 3^x = 3^(-1) x = -1 log3(1/3) = -1

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