Question

simplify i sqrt -45

Answer 1

\[ i\sqrt{-45} = \sqrt{-1}\sqrt{-45}=\sqrt{45}=3\sqrt{5} \]

Answer 2

\[i\sqrt{-45}=i\sqrt{5}i=-\sqrt{45}\]
then write \(\sqrt{45}\) in simplest radical form

Answer 3

@Ahaanomegas
\[\sqrt{ab}=\sqrt{a}\sqrt{b}\] only if \(a,b>0\)

Answer 4

so the answer is negative, not positive

Answer 5

satellite73, the 'a' could be negative and that formula would still work

Answer 6

yes, i was not quite correct