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Thread: Simplify!!! Square Roots and Variables. =/

  1. August 21st 2012, 07:32 PM #1
    pjlloyd100
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    Simplify!!! Square Roots and Variables. =/



    Simplify!!! Square Roots and Variables. =/-aleks1.jpg

    Help! Need it for the ALEKS test! My Calc is kinda rusty (2years).
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  2. August 21st 2012, 07:37 PM #2
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    Re: Simplify!!! Square Roots and Variables. =/

    Quote Originally Posted by pjlloyd100 View Post


    Click image for larger version.  Name: Aleks1.jpg  Views: 6  Size: 13.0 KB  ID: 24574

    Help! Need it for the ALEKS test! My Calc is kinda rusty (2years).
    No need for calculus... For starters, remember that the product of square roots is equal to the square root of the product. So \displaystyle \begin{align*} \sqrt{2x^2v^3}\sqrt{10x^4v^6} = \sqrt{2x^2v^3 \cdot 10x^4v^6} \end{align*}. Go from here.
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  3. August 21st 2012, 07:47 PM #3
    pjlloyd100
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    Re: Simplify!!! Square Roots and Variables. =/

    Ok from that I got sqrt(20x^6 y^9).

    Then I think I remember from school we used to factor out the perect squares..? So like sqrt(20*x^4*x^2*y^9)... So lost! Am I on the right track here? I feel like I'm confusing another process with this one.
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  4. August 21st 2012, 08:04 PM #4
    pjlloyd100
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    Re: Simplify!!! Square Roots and Variables. =/

    Got it: 2x^3 y^4 sqrt(5y)

    If anyone wants to check that for me, I'll appreciate it!
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  5. August 21st 2012, 08:07 PM #5
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    Re: Simplify!!! Square Roots and Variables. =/

    Quote Originally Posted by pjlloyd100 View Post
    Got it: 2x^3 y^4 sqrt(5y)

    If anyone wants to check that for me, I'll appreciate it!
    Correct
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