anonymous
  • anonymous
simplify 9a²-b² ------- ab _________ 3a+b ----- a 3a+b a
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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jamiebookeater
  • jamiebookeater
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anonymous
  • anonymous
disreguard the last 3a+b a it is typo
anonymous
  • anonymous
A/B/C/D=AD/BC
anonymous
  • anonymous
???????

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anonymous
  • anonymous
Consider the first line of your problem A, second B and so on. You can put the first, last on top, two middle bottom
anonymous
  • anonymous
what is the answer?
anonymous
  • anonymous
well, well, what have we here>>>
anonymous
  • anonymous
do u know the answer?
anonymous
  • anonymous
cld u type out the question again ?
anonymous
  • anonymous
simplify 9a²-b² ------- ab _________ 3a+b ----- a
anonymous
  • anonymous
its a difference of square
anonymous
  • anonymous
o.k, so does that mean divide by ab?
anonymous
  • anonymous
yes
anonymous
  • anonymous
(3a+b)(3a-b)
anonymous
  • anonymous
(3a-b)/b
anonymous
  • anonymous
oh, i see its a complex fraction
anonymous
  • anonymous
so ur a is gonna cancel
dumbcow
  • dumbcow
First, factor 9a^2 -b^2 (3a-b)(3a+b) Then Flip and Multiply when dividing fractions flip the bottom fraction and change to multiplication \[\frac{(3a-b)(3a+b)}{ab}*\frac{a}{3a+b}\] Now cancel the a on top and bottom cancel the (3a+b) on top and bottom leaving.. (3a-b)/b
anonymous
  • anonymous
wow, the cow did it again i am impressed
anonymous
  • anonymous
medal for you!!!!!!!!!!!!!!!!!!!!
anonymous
  • anonymous
it was hard to see at first, but I understand the question. Cool beans.
dumbcow
  • dumbcow
and to you for helping
anonymous
  • anonymous
well its late. The monkey needs its rest. Goodnight everyone.
dumbcow
  • dumbcow
tina does it make sense? ... goodnight
Gina
  • Gina
(3a+b)(3a-b)=9a^2-b^2

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