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→Two square roots: I disagree but won't revert
:<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:
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}}
:<math>\pm \sqrt{9} = \pm 3</math>
:<math>\pm \sqrt{9} = \pm 3</math>