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S_A_V [24]
3 years ago
12

What is the sum of the numbers

Mathematics
2 answers:
Anna007 [38]3 years ago
8 0

Answer:

B.) 4\sqrt{2}i

Step-by-step explanation:

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

\sqrt{-1*2} +\sqrt{-1*18} \\\\\sqrt{2}i+\sqrt{18}i

Simplify \sqrt{18} :

\sqrt{9*2}\\\\\sqrt{9}*\sqrt{2}\\\\ 3\sqrt{2}i

Add:

1\sqrt{2}i+3\sqrt{2}i\\\\4\sqrt{2}i

:Done

Aleksandr [31]3 years ago
7 0

Answer:

B  4i sqrt(2)

Step-by-step 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)

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