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Question

watsthe sum of radical negative and radical negative 18

Answer 1

radical negative and radical negative 18.  Assuming you mean sq rt (-18)+ sq rt(-18).  That equals 3i sq rt(2) + 3i sq rt(2) = 6i sq rt(2)

Answer 2

The first &quot;radical negative&quot; makes no sense.  Did you forget to type the number?

Radical negative 18 is okay, but what do you mean by saying only &quot;radical negative&quot;.

Since you have extended the answering period, you might as well add additional details.  Then send me a message, so I know when to check back.

By the way, you can simplify radical negative 18.

√(-18) = i√(18) = i√(9*2) = 3i√2