Do the operation and express the answer in a + bi form.
$( 9 - \sqrt { - 100 } ) + ( 10 + \sqrt { - 36 } )$
A)19 - 4i
B)- 38 - 8i
C)19 + 4i
D)- 38 + 8i
E)- 19 + 4i

Question

Do the operation and express the answer in a + bi form. 
 $( 9 - \sqrt { - 100 } ) + ( 10 + \sqrt { - 36 } )$  
A)19 - 4i
B)- 38 - 8i
C)19 + 4i
D)- 38 + 8i
E)- 19 + 4i

Quizplus · Accepted Answer

First, simplify the square roots of negative numbers using $i$ (where $i = \sqrt{-1}$). So, $\sqrt{-100} = 10i$ and $\sqrt{-36} = 6i$. Then, perform the addition: $(9 - 10i) + (10 + 6i) = 19 - 4i$.

Do the Operation and Express the Answer in a (9−−100)+(10+−36)( 9 - \sqrt { - 100 } ) + ( 10 + \sqrt { - 36 } )(9−−100​)+(10+−36​)

Do the Operation and Express the Answer in a $( 9 - \sqrt { - 100 } ) + ( 10 + \sqrt { - 36 } )$