Question

Find all the square roots of -196.

Answer 1

\[-196 = 4 \times 7 \times 7 \times( -1)\] (group factored)

NOW,\[=2^2 \times 7^2 \times i^2=(14i)^2\]

Answer 2

So your roots would be \[14i ~~~~~~~~and~~~~~~~~~~~~~~-14i\]