Iwill mark you as brainlinest for correct

Irrational
answer is
√10
√27
√99

 A rational number can be expressed as the quotient of two integers; an irrational number cannot.

Only sqrt(49) and sqrt(64) result in roots that are integers and rational:

sqrt(49) = 7/1;        sqrt(64) = 8/1

It would be the second one because it passes the vertical line test

Answer to your question: a. the fundamental theorem of algebra tells you that the equation will have two complex roots since the degree of the polynomial is 2. the roots are ​ x=1±i7√2 .number of roots=degree of polynomialhere, degree of polynomial is 2 so number of roots will be 2.hope it *_*