Respuesta:
[tex]a {}^{2} + b {}^{2} = 22 \\ a - b = 2 \\ (a - b) {}^{2} = 4 \\ a {}^{2} + b {}^{2} - 2ba = 4 \\ 22 - 2ab = 4 \\ - 2ab = 18 \\ - ba = 9 \\ ab = - 9[/tex]
raiz de a ×b
[tex] \sqrt{ab} = \sqrt{ - 9} = 3i[/tex]
listo.
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Respuesta:
[tex]a {}^{2} + b {}^{2} = 22 \\ a - b = 2 \\ (a - b) {}^{2} = 4 \\ a {}^{2} + b {}^{2} - 2ba = 4 \\ 22 - 2ab = 4 \\ - 2ab = 18 \\ - ba = 9 \\ ab = - 9[/tex]
raiz de a ×b
[tex] \sqrt{ab} = \sqrt{ - 9} = 3i[/tex]
listo.