HELP!! What choice is equivalent when x0?
√98x^3 divided by √72x^2
1) 7x/6
2) 7√x/6
3) √98x*3-72x^2
4) √26x

Question

HELP!! What choice is equivalent when x>0?
√98x^3 divided by √72x^2
1) 7x/6
2) 7√x/6
3) √98x*3-72x^2
4) √26x

anonymous · Answer

dude rewrite that and use parenthesis

anonymous · Answer

sqrt(98) = sqrt (49 x 2) so you can pull out the 49 as 7,
sqrt(72) = sqrt (36 x 2) so you can pull out the 36 as 6,

similarly, the x^3 can be pulled out as x^2
and the x^2 can be pulled out as x.

this would leave you with (7x^2 times sqrt(2)) over (6x times qrt(2))
cancel out and move from there.

anonymous · Answer

7x/6 is my answer

anonymous · Answer

7x/6 is my answer

anonymous · Answer

*nods*

anonymous · Answer

thanks burton! that really helped me on how to solve this . :)

anonymous · Answer

do I not get a point for checking his work?

anonymous · Answer

thanks guys***

anonymous · Answer

because if x = 1 then
then its root(98)/root(72) = root(2*7*7)/root(2*6*6) = 7root2/6root2 =7/6 with x=1