Question

Multiple Choice
which of the following is equal to sqrt 18 x^9y^4?
A. 3x^3y^2
B. 3 x^4y^2 sqrt 2x
C. 9 x^3y^2
D. 3 x^3y^2 sqrt 2

Answer 1

@jim_thompson5910

Answer 2

I think its A or D

Answer 3

@agent0smith

Answer 4

I'll get you started

\[\Large \sqrt{18x^9y^4}\]

\[\Large \sqrt{9*2*x^9*y^4}\]

\[\Large \sqrt{9*2*x^{8+1}*y^4}\]

\[\Large \sqrt{9*2*x^8*x^1*y^4}\]

\[\Large \sqrt{9*2*x^{4*2}*x^1*y^{2*2}}\]

\[\Large \sqrt{9*x^{4*2}*y^{2*2}*2*x}\]

\[\Large \sqrt{3^2*(x^4)^2*(y^2)^2*2*x}\]

\[\Large \sqrt{(3x^4y^2)^2*2x}\]

And I'll let you finish up

Answer 5

why would x^4 and not x^3

Answer 6

Since you have an (x^4)^2 and an x, which all together gives x^9

Answer 7

being 3 x^4y^2 sqrt 2x. Thank you, I figure it out

Answer 8

^yep