How do you simplify #sqrt18 * sqrt126#?

1 Answer
Alan P.
May 4, 2016

#sqrt(18)*sqrt(126)= color(blue)(18sqrt(7))#

Explanation:

#sqrt(color(red)18)*sqrt(color(green)(126))#

#color(white)("XXX")=sqrt(color(red)(3xx3xx2)xxcolor(green)(3xx3xx2xx7))#

#color(white)("XXX")=3xx3xx2sqrt(7)#

#color(white)("XXX")=18sqrt(7)#

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