How do you simplify sqrt(98x^3)3?

1 Answer
Oct 23, 2015

21xsqrt(2x)

Explanation:

First lets re-arrange the equation:
sqrt(98x^3)*3 rArr 3*sqrt(98x^3)
Now lets see what we can extract from inside the radical sign
3*sqrt(2*7*7*x*x*x)

Now because this is a square root , we can pull out the sqrt(7*7) and sqrt(x*x) and we are left with sqrt(2*x) in the radical.

Rewrite:
3*sqrt(7*7)*sqrt(x*x) * sqrt(2x) rArr (3*7*x)*sqrt(2x)

Answer:
21x*sqrt(2x)