anonymous
  • anonymous
Medals! Help with exponents
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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chestercat
  • chestercat
I got my questions answered at brainly.com in under 10 minutes. Go to brainly.com now for free help!
anonymous
  • anonymous
|dw:1440428299475:dw|
anonymous
  • anonymous
@imqwerty
Nnesha
  • Nnesha
when you multiply same bases you should `add` their exponents \[\huge\rm x^m \times x^n =x^{m+n}\]

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anonymous
  • anonymous
so -3+9?
Nnesha
  • Nnesha
right
anonymous
  • anonymous
|dw:1440428738933:dw|
Nnesha
  • Nnesha
and when you divide same bases you should move the bottom exponent to the top \[\frac{ x^m }{ x^n }=x^{m-n}\] when you divide same bases you should`subtract` the exponents
Nnesha
  • Nnesha
-3+9=?
anonymous
  • anonymous
sorry, I meant 6 :P
Nnesha
  • Nnesha
yes right 6
anonymous
  • anonymous
|dw:1440428929063:dw|
Nnesha
  • Nnesha
right
anonymous
  • anonymous
Is the answer 7^-2?
Nnesha
  • Nnesha
no \[\huge\rm 7^{6-(-8)}\] 8 is also negative
Nnesha
  • Nnesha
when you divide same bases u should subtract the exponents \[\huge\rm \frac{ x^m }{ x^{n} }=x^{m\color{ReD}{-}(n)}\] so in that question n=-8 1st uyou should multiply -(-8)

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