find square root of 64 minus square root of 4
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If a number is written without any sign what you assume its sign will be ....yesss its assumed to be positive only so if any thing written inside the symbol √ without any sign like √64 what will you assume its sign should be.....but if you want to find the solutions of the equation x2 = 64 then you will consider all the possible values whose square is 64 that is -4 and 4
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