Question

Geometric mean between -2i and 8i are?

Answer 1

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Let x be the Geometric Mean

So

${x}^{2} = - 2i \times 8i$

$\implies \: {x}^{2} = 16$

$\therefore \: x \: = \pm \: 4$

So the required geometric mean is

$\pm \: 4$

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