SOLUTION: What is the square root of 12x^3 over 5?

Algebra ->  Radicals -> SOLUTION: What is the square root of 12x^3 over 5?      Log On


   

Question 86160: What is the square root of 12x^3 over 5?
Answer by jim_thompson5910(35256) About Me  (Show Source):
You can put this solution on YOUR website!
sqrt%2812x%5E3%2F5%29 Start with the given expression

sqrt%2812x%5E3%29%2Fsqrt%285%29 Break up the square roots using the identity sqrt%28x%2Fy%29=sqrt%28x%29%2Fsqrt%28y%29
Now lets simplify the numerator sqrt%2812x%5E3%29
------------------------------------------------------------
sqrt%2812%2Ax%5E3%29 Start with the given expression
sqrt%284%2A3%2Ax%5E3%29 Factor 12 into 4%2A3

sqrt%284%2A3%2Ax%2Ax%5E2%29 Factor x%5E3 into x%2Ax%5E2

sqrt%284%29%2Asqrt%283%29%2Asqrt%28x%29%2Asqrt%28x%5E2%29 Break up the square roots using the identity sqrt%28x%2Ay%29=sqrt%28x%29%2Asqrt%28y%29

2%2Asqrt%283%29%2Asqrt%28x%29%2Asqrt%28x%5E2%29 Take the square root of the perfect square 4 to get 2

2%2Asqrt%283%29%2Asqrt%28x%29%2Ax Take the square root of the perfect squares and x%5E2 to get and x

2%2Asqrt%283%29%2Ax%2Asqrt%28x%29 Multiply the common terms
2%2Ax%2Asqrt%28x%29%2Asqrt%283%29 Rearrange the terms
2%2Ax%2Asqrt%283x%29 Group the square root terms
------------------------------------------------------------

So the expression

sqrt%2812x%5E3%2F5%29

simplifies to

%282%2Ax%2Asqrt%283x%29%29%2Fsqrt%285%29