Question

Simplify
4√-4+5√-9-3√-16​

Answer 1

4×2i+5×3i-3×4i

=8i+15i-12i

=11i

Answer 2

Answer:

Step-by-step explanation:

$4\sqrt{-4}+5\sqrt{-9}-3\sqrt{-16}$

$=4.2i+5.3i-3.4i ------(i=\sqrt{-1} )$

$=8i+15i-12i$

$=23i-12i$

$=11i$

$=\sqrt{11} \sqrt{11} \sqrt{-1}$

$=\sqrt{-121}$    Ans: