The square root of (3x^2) times 3 times the square root of (3x^4)

where / x / is "the absolute value of x";
Then 
In ihe same way, because ;
The square root of (3x^2) times 3 times the square root of (3x^4) is 9 × × ;But, for x > 0, | x | = x ; for x < 0, | x | = –x ;
Finally, The square root of (3x^2) times 3 times the square root of (3x^4) is 3, for  and -3, for