Changes

:<math>\sqrt{9} = 3</math>

:<math>\sqrt{9} = 3</math>

When both square roots are to be considered, in mathematics the convention is to use a sign, pronounced "plus or minus" to signify them:{{fact}}

When both square roots are to be considered, in mathematics the convention is to use a sign, pronounced "plus or minus" to signify them:

:<math>\pm \sqrt{9} = \pm 3</math>

:<math>\pm \sqrt{9} = \pm 3</math>