saifoo.khan
Whoz Gonna Chk this??
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giggles123
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Moi
saifoo.khan
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giggles123
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working on it give me a sec
saifoo.khan
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Sure, :)
giggles123
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sqrt(3a)+16asqrt(3a)===>17sqrt(3a)
giggles123
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there is no xtra A
saifoo.khan
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why? where does it goes?
giggles123
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sqrt(3a)+8sqrt(12a^(3))
Pull all perfect square roots out from under the radical. In this case, remove the 2a because it is a perfect square.
sqrt(3a)+(8*2asqrt(3a))
Multiply 8 by 2a to get 16a.
sqrt(3a)+(16a)sqrt(3a)
Remove the parentheses around the expression 16a.
sqrt(3a)+16asqrt(3a)
Hero
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Yeah, that's the correct answer
Hero
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and the way it should be written...
Hero
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the a goes before the root not after it
saifoo.khan
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the answer is
\[\Huge \sqrt{3a}(16a+1)\]
Hero
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I don't disagree
giggles123
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its the same thing in a different form
saifoo.khan
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No, tht isnt same!
Hero
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Whose online test are you taking this time?
saifoo.khan
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there is a extra 'a'
saifoo.khan
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someone's ;)
Hero
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There's no extra a dummy
Hero
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I mean guru
Hero
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the right amount of a's are there
Hero
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so if it's the right answer, there could never be an extra a, if there was it would be one a too many and it would be wrong
saifoo.khan
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in the photo u can see, its 16root(3a) a.
because of that last a, u cant add them!
Hero
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Yes, you're right, you can't add them...so factoring out the sqrt(3a) was a good step....
saifoo.khan
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hmmm! :(