How do you find the square root of -63?

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Answer 1 · 2018-06-05T17:38:39

$3isqrt(7)$

$sqrt(-63)$

first of all this is an imaginary number so we do this $sqrt(-1) = i$ :

$=sqrt(63)*sqrt(-1)$

$=sqrt(63)*i$

$=sqrt(3*3*7)*i$

$=sqrt(3^2*7)*i$

$=3sqrt(7)*i$

$=3isqrt(7)$