Question

What is the sum of the numbers

Answer 1

B.)
`4√(2)i`

Explanation:

Simplify both radicals from negative form (the square root of -1 is i ):

`√(-1*2) +√(-1*18) \\\\√(2)i+√(18)i`

Simplify
`√(18)` :

`√(9*2)\\\\√(9)*√(2)\\\\ 3√(2)i`

Add:

`1√(2)i+3√(2)i\\\\4√(2)i`

:Done

Answer 2

B 4i sqrt(2)

Explanation:

sqrt(-2) = sqrt(-1) * sqrt(2) = i sqrt(2)

sqrt(-18) = sqrt(-1) sqrt(2) sqrt(9) = 3i sqrt(2)

Add them together

i sqrt(2) + 3i sqrt(2)

4i sqrt(2)