Question

S2+9=0 extracting square roots?

Answer 1

Answer:-

$\sf {s}^{2} + 9 = 0$

$\sf \implies {s}^{2} = - 9$

$\sf \implies s = \sqrt{ - 9}$

$\sf \implies s = \sqrt{ - 1} \times \sqrt{9}$

$\sf \implies s = \sqrt{ - 1} \times \pm 3$

$\sf \implies s = \pm 3i$

Note:-

• $\sf i = \sqrt{ - 1} (imaginary \: number)$

Answer 2

Answer:

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