How do you simplify #sqrt 4times sqrt 4#?

1 Answer
Aug 12, 2016

Answer:

#sqrt 4 xx sqrt 4 =4#
A Square and a square root are inverse operations and cancel each other out.

Explanation:

Each operation has an inverse. One does, the other undoes.

#+6 -6 =0#

#8 xx 3 div 3 = 8#

#sqrtx^2 = x#

In this case we have two possible methods

#sqrt 4 xx sqrt 4 = sqrt16 =4#

OR #(sqrt4)^2 # = 4