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QUESTION
What is the simplest radical form of the square root of 216?
##=color(blue)(6sqrt(6)##
Prime factorisation of ##216## helps us simplify the radical: ##216=sqrt(2*2*2*3*3*3)##
##=sqrt(2^2*2*3^3*3)##
##=2*3sqrt(2*3)##
##=color(blue)(6sqrt(6)##
