When adding the square root of 9 and –7, which type of number is the sum?

A. irrational
B. whole number
C. radical
D. integer *****

ami correct?

4 answers

none of the above
√9 + √-7 = 3 + √7 i
that is a complex number

I suspect a typo
ah. it occurs to me you meant √9 + -7 = -4
which is indeed an integer.
that's what it is on the test so im so confused now :(
thank you :)