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rationalize the denominator of √-16 _________ (1+i)+(6+3i)

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-16 can be written as the product of 16 and -1, right? so what's the sqrt of 16 and the sqrt of -1?
i haven't any idea

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Other answers:

ok, sqrt of 16, what multiplied with itself gives 16?
ok, what about -1?
im not sure about the -1
there isnt an answer for that... right?
ok, I'll give you that one, because it's a bit tricky, it's actually i. i * i = -1
i times i. got it.
ok, perfect, so sqrt of -16 = sqrt 16 * sqrt -1 = 4 * i
but its negative 16 under the square root....
and none of that is one of my choices
all of my choices look like fractions
Yup, and it's still works because of this : \[\sqrt{xy} = \sqrt{x} * \sqrt{y}\] right, so once you solve the the denominator, go back to hashsam1's solution
so it would be
thank you so much for all of your help!
is this the answer?
in your choices?
its 16 + 28i over 65

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