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Denis Cornehl · Answer 1 · 2022-03-15T16:39:12+0000

Answer: because √-1 complex number ; and -√1 real number

Explanation:

because √-1 complex number ; and -√1 real number or
$\displaystyle\ (√(-1))^2 \\eq(- √(1) )^2 \\\\-1\\eq 1$