Question

Write the following as a complex number in the form a + bi square root -245

Answer 1

Answer:

Step-by-step explanation:

√(-245)=√(49×5×i^2)=7√5 i=0+7√5 i

Answer 2

Answer:

$\sqrt{-245}$  in the form a + bi is $0+7\sqrt{5}i$

Step-by-step explanation:

We know that

       $i=\sqrt{-1}$

We need to find  $\sqrt{-245}$

     $\sqrt{-245}=\sqrt{-1}\times \sqrt{245}=i\sqrt{245}=i\sqrt{49\times 5}=i\times 7\sqrt{5}$

$\sqrt{-245}$  in the form a + bi is $0+7\sqrt{5}i$