How do you divide sqrt(12x^3y^12)/sqrt(27xy^2)?

2 Answers
Mar 22, 2015

Take one big root to get:
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and finally taking the square root:
=2/3*xy^5

Hope it helps!

Mar 22, 2015

There are several good approaches to this question:
The reason I try this is that I see some common factors. Namely 3, x, and y^2

Write it as a single square root, then simplify, the break it up into smaller square roots.
Or simplify both numerator and denominator, then simplify what you can.

sqrt(12x^3y^12)/sqrt(27xy^2)=sqrt((12x^3y^12)/(27xy^2))=sqrt((4x^2y^10)/9)=(2xy^5)/3

Or:

sqrt(12x^3y^12)/sqrt(27xy^2)=(sqrt(4*3*x^2*x*y^12))/(sqrt(9*3*x*y^2))=(2xy^6sqrt(3x))/(3ysqrt(3x))=(2xy^5)/3

(Rationalizing the denominator would work too, eventually.)