Is $2+-1sqrt3$ the same as $2+-sqrt3$ ?

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Answer 1 · 2018-03-06T22:16:56

Yes.

$1sqrt(3)=1xxsqrt(3)=sqrt(3)$

Multiplying any real number by $1$ leaves the number unchanged.

$1$ is said to preserve the identity in multiplication.

Is 2+-1sqrt32+-1sqrt3 the same as 2+-sqrt32+-sqrt3 ?