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QUESTION
Simplify this ##sqrt(9^(16x^2)) ## ?
##3^(16x^2)## or ##9^(8x^2)##
##sqrt(9^(16x^2)) = (9^(16x^2))^(1/2) = 9^((1/2)16x^2)##
## = (9^(1/2))^(16x^2) = 3^(16x^2)## OR ##=9^((1/2*16)x^2) = 9^(8x^2)##
